CN218980147U

CN218980147U - Portable detachable expiratory valve and breathing machine

Info

Publication number: CN218980147U
Application number: CN202222255807.2U
Authority: CN
Inventors: 唐克锋; 王双卫; 高贵锋
Original assignee: Ambulanc Shenzhen Tech Co Ltd
Current assignee: Ambulanc Shenzhen Tech Co Ltd
Priority date: 2022-08-25
Filing date: 2022-08-25
Publication date: 2023-05-09
Anticipated expiration: 2032-08-25

Abstract

The utility model belongs to the technical field of medical appliances, and particularly relates to a portable detachable exhalation valve and a respirator. In the portable detachable expiratory valve, be equipped with annular draw-in groove in the intake pipe, be equipped with the through-hole of intercommunication inlet port on the inner wall of annular draw-in groove, be equipped with the joint groove on the interface sleeve's the outer wall, be equipped with the joint piece on the inner wall of rand, the interface sleeve is pegged graft the intake pipe is kept away from the one end of separating tube, the rand joint is in the annular draw-in groove, just the joint piece passes the through-hole joint is in the joint groove. According to the utility model, the interface sleeve can be detachably connected to the air inlet pipe through the clamping ring, and the disassembly and assembly between the interface sleeve and the valve seat are simple, so that the cleaning and disinfection work of the interface sleeve and the valve seat are facilitated, and the infection accident caused by the repeated use of the interface sleeve is avoided.

Description

Portable detachable expiratory valve and breathing machine

Technical Field

The utility model belongs to the technical field of medical appliances, and particularly relates to a portable detachable exhalation valve and a respirator.

Background

The breathing machine is divided into an emergency transportation breathing machine, a treatment breathing machine, a household breathing machine and the like according to functional purposes. The treatment respirator is mainly used for respiratory treatment in intensive care units such as intensive care units and coronary heart disease monitoring units; the first-aid transferring breathing machine is mainly used for transferring patients in advance or in-hospital first-aid; the household breathing machine is mainly used for household sleep treatment. The exhalation valve is an important part on the breathing machine, and the exhalation valve can detect breathing parameters of the gas exhaled by the user and further obtain breathing information of the user.

In emergency transport ventilators and therapeutic ventilators, because the ventilators can interface with different patients, the exhalation valve needs to be frequently disassembled for cleaning and disinfection in order to avoid mutual infection between different patients. In the prior art, the exhalation valve is usually an integral structural member, the structure is complex, the overall disinfection effect is poor, and a disinfection sanitary dead point exists, so that the risk of infection is increased.

Disclosure of Invention

The technical problems to be solved by the utility model are as follows: aiming at the problem that the breather valve in the prior art is inconvenient to clean and disinfect, the portable detachable breather valve and the breathing machine are provided.

In order to solve the above technical problems, an embodiment of the present utility model provides a portable detachable exhalation valve, which includes a valve seat, a diaphragm assembly, an interface sleeve, and a collar; the valve seat comprises a partition pipe, an air inlet pipe provided with an air inlet hole, an air outlet pipe provided with an air outlet hole and a valve body provided with an installation space; the partition pipe is installed in the installation space, and divides the installation space into an annular space and an inner space; the air inlet pipe is connected with the partition pipe, and the air inlet hole is communicated with the inner space; the air outlet pipe is connected with the valve body, and the air outlet hole is communicated with the annular space;

the valve body is also provided with a mounting port communicated with the inner space and the annular space, the diaphragm assembly is mounted on the mounting port and is used for conducting or closing a channel between the inner space and the annular space;

the air inlet pipe is provided with an annular clamping groove, the inner wall of the annular clamping groove is provided with a through hole communicated with an air inlet hole, the outer wall of the interface sleeve is provided with a clamping groove, the inner wall of the clamping ring is provided with a clamping block, the interface sleeve is inserted into the air inlet pipe and away from one end of the partition pipe, the clamping ring is clamped in the annular clamping groove, and the clamping block penetrates through the through hole and is clamped in the clamping groove.

Optionally, an inserting groove is further formed in the outer wall of the valve body, an inserting arm is arranged on the diaphragm assembly, and the diaphragm assembly is installed on the installation port through the inserting arm inserted in the inserting groove.

Optionally, the diaphragm assembly includes a diaphragm body and a fixed ring; an annular groove is formed in the diaphragm body, and an annular slot is formed in the side wall of the annular groove; the fixing ring is provided with an annular mounting part, and the annular mounting part is provided with an annular inserting part; the annular mounting part is inserted in the annular groove, the annular insertion part is inserted in the annular slot, and the fixing ring is mounted on the diaphragm body;

the fixed ring is installed on the installation port through the plug-in arms inserted in the plug-in grooves, and the diaphragm body is used for conducting or closing a channel between the inner space and the annular space.

Optionally, the portable detachable exhalation valve further comprises a sampling diaphragm, an annular inserting hole communicated with the air outlet hole is further formed in the air outlet pipe, and the sampling diaphragm is inserted into the annular inserting hole.

Optionally, the sampling diaphragm includes the shell that is equipped with the mounting hole and installs diaphragm main part in the mounting hole, be equipped with first arm and the second arm of enclosing on two opposite outer walls of annular spliced eye respectively, the shell is pegged graft in the annular spliced eye between the first arm of enclosing with the second arm of enclosing, just the diaphragm main part is located in the venthole.

Optionally, a first interface and a second interface are further arranged on the air outlet pipe, and the first interface and the second interface are respectively communicated with the air outlet holes on two sides of the diaphragm main body; the valve body is also provided with a first sampling port and a second sampling port;

the portable detachable expiratory valve further comprises a sampling connecting pipe, the sampling connecting pipe comprises a first sampling pipe and a second sampling pipe, the opposite ends of the first sampling pipe are respectively communicated with the first interface and the first sampling port, and the opposite ends of the second sampling pipe are respectively communicated with the second interface and the second sampling port.

Optionally, the sampling connecting pipe further comprises a mounting block for connecting the first sampling pipe and the second sampling pipe, an inserting through hole is formed in the mounting block, an inserting convex arm is further arranged on the valve body, and the sampling connecting pipe is installed on the valve body through the inserting convex arm inserted in the inserting through hole.

Optionally, the portable detachable exhalation valve further comprises a one-way valve installed in the air outlet hole, and one end of the air outlet pipe, which is far away from the valve seat, is communicated with the annular space through the one-way valve.

Optionally, the portable detachable exhalation valve further comprises a mesh screen, an annular convex wall is further arranged on the inner wall of the air inlet hole, and the mesh screen is arranged between the annular convex wall and the interface sleeve.

The utility model also provides a breathing machine, which comprises a host machine and the portable detachable expiratory valve; the portable detachable exhalation valve is characterized in that a first clamping piece is arranged on the host, a second clamping piece is arranged on the valve body, and the portable detachable exhalation valve is detachably mounted on the host through the first clamping piece and the second clamping piece which are mutually clamped.

According to the utility model, an annular clamping groove is formed in the air inlet pipe, a through hole for communicating an air inlet hole is formed in the inner wall of the annular clamping groove, a clamping groove is formed in the outer wall of the interface sleeve, a clamping block is arranged on the inner wall of the clamping ring, the interface sleeve is inserted into one end, far away from the partition pipe, of the air inlet pipe, the clamping ring is clamped in the annular clamping groove, and the clamping block penetrates through the through hole and is clamped in the clamping groove; the connector sleeve can be detachably connected to the air inlet pipe through the clamping ring, and the connector sleeve and the valve seat are easy to assemble and disassemble, so that the connector sleeve and the valve seat can be cleaned and sterilized conveniently, and the infection accident caused by the repeated use of the connector sleeve is avoided.

Drawings

The utility model will be further described with reference to the drawings and examples.

FIG. 1 is a schematic diagram of an exploded construction of a portable detachable exhalation valve according to one embodiment of the present utility model;

FIG. 2 is a schematic illustration of a portable detachable exhalation valve according to one embodiment of the present utility model;

FIG. 3 is a cross-sectional view taken along the direction A-A in FIG. 2;

FIG. 4 is a cross-sectional view taken along the direction B-B in FIG. 2;

FIG. 5 is a schematic diagram of a portable detachable exhalation valve according to another view of an embodiment of the present utility model;

FIG. 6 is a schematic illustration of a valve seat of a portable detachable exhalation valve according to an embodiment of the present utility model;

FIG. 7 is a schematic diagram of another view of a valve seat of a portable detachable exhalation valve according to an embodiment of the present utility model;

FIG. 8 is a schematic structural view of a collar of a portable detachable exhalation valve provided in accordance with an embodiment of the present utility model;

FIG. 9 is a schematic illustration of the interface sleeve of a portable detachable exhalation valve according to an embodiment of the present utility model;

FIG. 10 is a cross-sectional view of a diaphragm assembly of a portable removable exhalation valve provided in accordance with an embodiment of the present utility model;

fig. 11 is a schematic structural diagram of a ventilator according to an embodiment of the present utility model.

Reference numerals in the specification are as follows:

1. a valve seat; 11. a partition tube; 12. an air inlet pipe; 121. an air inlet hole; 122. an annular clamping groove; 123. a through hole; 13. an air outlet pipe; 131. an air outlet hole; 132. a plug hole; 133. a first enclosing arm; 134. a second enclosing arm; 135. a first interface; 136. a second interface; 14. a valve body; 141. an annular space; 142. an inner space; 143. a plug-in groove; 144. a first sampling port; 145. a second sampling port; 146. inserting convex arms; 2. a diaphragm assembly; 21. a plug arm; 22. a diaphragm body; 221. an annular slot; 23. a fixing ring; 231. an annular mounting portion; 232. an annular plug-in part; 3. an interface sleeve; 31. a clamping groove; 4. a collar; 41. a clamping block; 5. sampling a membrane; 6. a sampling connecting pipe; 61. a first sampling tube; 62. a second sampling tube; 63. a mounting block; 631. inserting through holes; 7. a one-way valve; 8. a mesh screen; 10. a portable detachable exhalation valve; 101. a first clamping piece; 20. a host; 201. and the second clamping piece.

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.

It is to be understood that the directions or positional relationships indicated by the terms "upper", "lower", "left", "right", "front", "rear", "middle", etc., are based on the directions or positional relationships shown in the drawings, are merely for convenience of description and simplification of the description, and do not indicate or imply that the apparatus or element in question must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as limiting the utility model.

As shown in fig. 1 to 4, a portable detachable exhalation valve 10 according to an embodiment of the present utility model includes a valve seat 1, a diaphragm assembly 2, an interface sleeve 3, and a collar 4; the valve seat 1 comprises a separation pipe 11, an air inlet pipe 12 provided with an air inlet hole 121, an air outlet pipe 13 provided with an air outlet hole 131 and a valve body 14 provided with an installation space; the partition 11 is installed in the installation space, and the partition 11 partitions the installation space into an annular space 141 and an inner space 142; the air inlet pipe 12 is connected with the partition pipe 11, and the air inlet hole 121 is communicated with the inner space 142; the air outlet pipe 13 is connected with the valve body 14, and the air outlet hole 131 is communicated with the annular space 141; it will be appreciated that the air inlet pipe 12 is connected to the partition pipe 11 through the annular space 141, and the partition pipe 11, the air inlet pipe 12, the air outlet pipe 13 and the valve body 14 are integrally formed.

As shown in fig. 2 to 4, the valve body 14 is further provided with a mounting port for communicating the inner space 142 and the annular space 141, the diaphragm assembly 2 is mounted on the mounting port, and the diaphragm assembly 2 is used for conducting or closing a passage between the inner space 142 and the annular space 141; it can be appreciated that the partition pipe 11 and the valve body 14 are both open structural members, and the diaphragm assembly 2 is made of rubber; when the gas pressure in the inner space 142 reaches the preset pressure, the gas in the inner space 142 pushes the diaphragm assembly 2 open, and the inner space 142 is communicated with the annular space 141; when the gas pressure of the inner space 142 is less than the preset pressure, the diaphragm assembly 2 abuts against the opening edge of the partition 11, so that the inner space 142 will not communicate with the annular space 141.

As shown in fig. 6, 8 and 9, the air inlet pipe 12 is provided with an annular clamping groove 122, a through hole 123 for communicating with the air inlet hole 121 is formed in the inner wall of the annular clamping groove 122, a clamping groove 31 is formed in the outer wall of the interface sleeve 3, a clamping block 41 is arranged on the inner wall of the clamping ring 4, the interface sleeve 3 is inserted into one end, far away from the partition pipe 11, of the air inlet pipe 12, the clamping ring 4 is clamped into the annular clamping groove 122, and the clamping block 41 penetrates through the through hole 123 and is clamped into the clamping groove 31. It will be appreciated that the collar 4 is not a complete ring of structural members and that an opening is provided to facilitate the snap-engagement of the collar 4 in the annular slot 122. The number of the through holes 123 may be designed to be multiple according to actual requirements, and the number of the clamping blocks 41 and the number of the clamping grooves 31 are equal to the number of the through holes 123, and one clamping block 41 corresponds to one through hole 123 and one clamping groove 31.

Specifically, as shown in fig. 2 to 4, the mouthpiece 3 is connected to an exhalation joint, and the gas exhaled by the user is sequentially output into the internal space 142 through the mouthpiece 3 and the gas inlet pipe 12; when the pressure of the gas in the inner space 142 reaches the preset pressure, the gas in the inner space 142 pushes the diaphragm assembly 2 open, and at this time, the inner space 142 is communicated with the annular space 141; so that the gas in the inner space 142 passes through the annular space 141 and then is output through the gas outlet hole 131.

In the utility model, an annular clamping groove 122 is arranged on the air inlet pipe 12, a through hole 123 which is communicated with an air inlet hole 121 is arranged on the inner wall of the annular clamping groove 122, a clamping groove 31 is arranged on the outer wall of the interface sleeve 3, a clamping block 41 is arranged on the inner wall of the clamping ring 4, the interface sleeve 3 is inserted into one end of the air inlet pipe 12, which is far away from the partition pipe 11, the clamping ring 4 is clamped in the annular clamping groove 122, and the clamping block 41 passes through the through hole 123 and is clamped in the clamping groove 31; the interface sleeve 3 can be detachably connected to the air inlet pipe 12 through the clamping ring 4, and the disassembly and assembly between the interface sleeve 3 and the valve seat 1 are simple, so that the interface sleeve 3 and the valve seat 1 can be conveniently cleaned and disinfected, and the infection accident caused by the repeated use of the interface sleeve 3 is avoided.

In an embodiment, as shown in fig. 6 and 10, a plugging slot 143 is further formed on the outer wall of the valve body 14, a plugging arm 21 is formed on the diaphragm assembly 2, and the diaphragm assembly 2 is mounted on the mounting port through the plugging arm 21 plugged in the plugging slot 143. As can be appreciated, the plug arms 21 extend towards the outside of the diaphragm assembly 2, the plug slots 143 being provided at the edge of the mounting opening of the valve body 14; and the number of the plugging arms 21 and the plugging grooves 143 can be designed according to practical requirements. In this embodiment, the diaphragm assembly 2 is detachably mounted on the valve body 14 through the plugging arm 21, so as to facilitate the disassembly and assembly work between the diaphragm assembly 2 and the valve seat 1, and further facilitate the cleaning and disinfection of the diaphragm assembly 2.

In one embodiment, as shown in fig. 10, the diaphragm assembly 2 includes a diaphragm body 22 and a fixing ring 23; an annular groove is formed in the diaphragm body 22, and an annular slot 221 is formed in the side wall of the annular groove; the fixed ring 23 is provided with an annular mounting part 231, and the annular mounting part 231 is provided with an annular inserting part 232; the annular mounting part 231 is inserted into the annular groove, the annular insertion part 232 is inserted into the annular slot 221, and the fixed ring 23 is mounted on the diaphragm body 22; as will be appreciated, the annular groove is recessed toward the underside of the diaphragm body 22, and the annular slot 221 is recessed toward the side of the diaphragm body 22; the annular groove and the annular slot 221 have an L-shaped structure in a radial cross section of the diaphragm body 22.

Specifically, the annular insertion portion 232 of the fixing ring 23 is inserted into the annular groove of the diaphragm body 22 after being pressed, and the annular insertion portion 232 of the fixing ring 23 is inserted into the annular slot 221 due to elastic force, so that the mounting work between the fixing ring 23 and the diaphragm body 22 is completed, and the connection between the fixing ring 23 and the diaphragm assembly 2 is tight.

The insertion arm 21 is disposed on the fixing ring 23, the fixing ring 23 is mounted on the mounting port by the insertion arm 21 inserted into the insertion groove 143, and the diaphragm body 22 is used for conducting or closing the passage between the inner space 142 and the annular space 141. It will be appreciated that the retaining ring 23 and the diaphragm body 22 are both made of silicone. Specifically, the diaphragm body 22 is first mounted on the fixing ring 23, and the fixing ring 23 is then mounted on the valve body 14 through the plugging arms 21 snapped into the plugging grooves 143. In this embodiment, the fixing ring 23, the diaphragm body 22, and the valve body 14 are easily assembled and disassembled.

In an embodiment, as shown in fig. 1 and 7, the portable detachable exhalation valve 10 further includes a sampling diaphragm 5, the air outlet pipe 13 is further provided with an annular insertion hole 132 that communicates with the air outlet hole 131, and the sampling diaphragm 5 is inserted into the annular insertion hole 132. It is to be appreciated that the annular insertion hole 132 is formed on the side wall of the air outlet pipe 13, and the sampling membrane 5 is inserted into the annular insertion hole 132, so that the disassembly and assembly work between the sampling membrane 5 and the valve seat 1 is facilitated, and the cleaning and the disinfection of the sampling membrane 5 are facilitated.

In an embodiment, as shown in fig. 7, the sampling membrane 5 includes a housing provided with a mounting hole and a membrane body mounted in the mounting hole, a first enclosing arm 133 and a second enclosing arm 134 are respectively provided on two opposite outer walls of the annular inserting hole 132, the housing is inserted into the annular inserting hole 132 between the first enclosing arm 133 and the second enclosing arm 134, and the membrane body is located in the air outlet hole 131. As can be appreciated, the first enclosing arm 133 and the second enclosing arm 134 extend towards the outer side of the air outlet pipe 13, and the housing is inserted between the first enclosing arm 133 and the second enclosing arm 134, so that the stability of inserting the sampling diaphragm 5 into the annular insertion hole 132 is ensured.

In an embodiment, as shown in fig. 5 and fig. 7, the air outlet pipe 13 is further provided with a first interface 135 and a second interface 136, and the first interface 135 and the second interface 136 are respectively communicated with the air outlet holes 131 on two sides of the membrane main body; the valve body 14 is also provided with a first sampling port 144 and a second sampling port 145; it will be appreciated that the first sampling port 144 and the second sampling port 145 are connected to an external sampling sensor (differential pressure flow sensor, etc.).

The portable detachable exhalation valve 10 further includes a sampling connection tube 6, the sampling connection tube 6 includes a first sampling tube 61 and a second sampling tube 62, opposite ends of the first sampling tube 61 are respectively communicated with the first interface 135 and the first sampling port 144, and opposite ends of the second sampling tube 62 are respectively communicated with the second interface 136 and the second sampling port 145. It will be appreciated that the external sensor may sample the gas parameter of the gas on one side of the sampling diaphragm 5 through the first sampling tube 61, sample the gas parameter of the gas on the other side of the sampling diaphragm 5 through the second sampling tube 62, and obtain the pressure parameter of the gas exhaled by the user through the comparison of the gas parameters on both sides of the sampling diaphragm 5.

In one embodiment, as shown in fig. 1, the sampling connection pipe 6 further includes a mounting block 63 for connecting the first sampling pipe 61 and the second sampling pipe 62, the mounting block 63 is provided with a plugging through hole 132, the valve body 14 is further provided with a plugging protruding arm 146, and the sampling connection pipe 6 is mounted on the valve body 14 through the plugging protruding arm 146 plugged in the plugging through hole 132. It will be appreciated that the sampling connection pipe 6 is made of a rubber member or a silica gel member, and the sampling connection pipe 6 is mounted on the valve body 14 through the insertion convex arm 146 inserted in the insertion through hole 132, so that the dismounting work between the sampling connection pipe 6 and the valve seat 1 is facilitated, and the cleaning and the disinfection of the sampling connection pipe 6 are facilitated.

In one embodiment, as shown in fig. 1, the portable detachable exhalation valve 10 further includes a one-way valve 7 installed in the exhalation port 131, and the end of the exhalation tube 13 remote from the valve seat 1 communicates with the annular space 141 through the one-way valve 7. It will be appreciated that the one-way valve 7 is located behind the sampling diaphragm 5 in the direction of the flow of gas through the outlet aperture 131. In this embodiment, the check valve 7 may prevent external air from flowing into the annular space 141 through the air outlet 131.

In an embodiment, as shown in fig. 1 and 3, the portable detachable exhalation valve 10 further includes a mesh screen 8, and an annular convex wall is further provided on the inner wall of the air intake hole 121, and the mesh screen 8 is installed between the annular convex wall and the mouthpiece 3. It will be appreciated that the annular projection extends towards the centre of the inlet aperture 121 and the mesh screen 8 is pressed against the annular projection by the mouthpiece 3 so that when the mouthpiece 3 is removed the mesh screen 8 will be automatically removed from the inlet aperture 121 and the mesh screen 8 will be easily removed and the mesh screen 8 will be readily removed for freshening and sterilising.

As shown in fig. 11, another embodiment of the present utility model further provides a breathing machine, including a main unit 20 and the portable detachable exhalation valve 10 described above; the host 20 is provided with a first fastening piece 101, the valve body 14 is provided with a second fastening piece 201, and the portable detachable exhalation valve 10 is detachably mounted on the host 20 through the first fastening piece 101 and the second fastening piece 201 which are mutually fastened. It can be appreciated that the host 20 is further provided with a mounting groove, and the portable detachable exhalation valve 10 is detachably mounted in the mounting groove through the first fastening piece 101 and the second fastening piece 201 that are fastened to each other. In the present utility model, the disassembly and assembly between the main body 20 and the portable detachable exhalation valve 10 are simple, so that the user can easily disassemble the portable detachable exhalation valve 10 from the main body 20 and perform the work of sterilizing and cleaning it.

The above embodiments of the portable detachable exhalation valve and the respirator of the present utility model are merely examples, and are not intended to limit the present utility model, and any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included in the scope of the present utility model.

Claims

1. A portable detachable exhalation valve, which is characterized by comprising a valve seat, a diaphragm assembly, an interface sleeve and a clamping ring; the valve seat comprises a partition pipe, an air inlet pipe provided with an air inlet hole, an air outlet pipe provided with an air outlet hole and a valve body provided with an installation space; the partition pipe is installed in the installation space, and divides the installation space into an annular space and an inner space; the air inlet pipe is connected with the partition pipe, and the air inlet hole is communicated with the inner space; the air outlet pipe is connected with the valve body, and the air outlet hole is communicated with the annular space;

2. The portable detachable exhalation valve of claim 1, wherein an insertion groove is further provided on an outer wall of the valve body, an insertion arm is provided on the diaphragm assembly, and the diaphragm assembly is mounted on the mounting port by the insertion arm inserted into the insertion groove.

3. The portable detachable exhalation valve of claim 2, wherein said diaphragm assembly comprises a diaphragm body and a retaining ring; an annular groove is formed in the diaphragm body, and an annular slot is formed in the side wall of the annular groove; the fixing ring is provided with an annular mounting part, and the annular mounting part is provided with an annular inserting part; the annular mounting part is inserted in the annular groove, the annular insertion part is inserted in the annular slot, and the fixing ring is mounted on the diaphragm body;

4. The portable detachable exhalation valve of claim 1, further comprising a sampling diaphragm, wherein the outlet tube is further provided with an annular insertion hole in communication with the outlet hole, and the sampling diaphragm is inserted into the annular insertion hole.

5. The portable detachable exhalation valve of claim 4, wherein the sampling diaphragm comprises a housing provided with a mounting hole and a diaphragm body mounted in the mounting hole, wherein a first enclosing arm and a second enclosing arm are respectively arranged on two opposite outer walls of the annular inserting hole, the housing is inserted into the annular inserting hole between the first enclosing arm and the second enclosing arm, and the diaphragm body is positioned in the air outlet hole.

6. The portable detachable exhalation valve of claim 5, wherein the outlet tube is further provided with a first interface and a second interface, and the first interface and the second interface are respectively communicated with the air outlet holes on two sides of the diaphragm body; the valve body is also provided with a first sampling port and a second sampling port;

7. The portable detachable exhalation valve of claim 6, wherein said sampling connection tube further comprises a mounting block connecting said first sampling tube and said second sampling tube, said mounting block having a mating through hole therein, said valve body further having a mating male arm therein, said sampling connection tube being mounted to said valve body by said mating male arm mated in said mating through hole.

8. The portable detachable exhalation valve of claim 1, further comprising a one-way valve mounted in said outlet aperture, an end of said outlet tube remote from said valve seat being in communication with said annular space via said one-way valve.

9. The portable detachable exhalation valve of claim 1, further comprising a mesh screen, wherein an annular raised wall is further provided on an inner wall of said inlet aperture, said mesh screen being mounted between said annular raised wall and said interface sleeve.

10. A ventilator comprising a main unit and a portable detachable exhalation valve as claimed in any one of claims 1 to 9; the portable detachable exhalation valve is characterized in that a first clamping piece is arranged on the host, a second clamping piece is arranged on the valve body, and the portable detachable exhalation valve is detachably mounted on the host through the first clamping piece and the second clamping piece which are mutually clamped.