CN113504223B - Gas detection valve and ozone disinfection bedspread - Google Patents
Gas detection valve and ozone disinfection bedspread Download PDFInfo
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- CN113504223B CN113504223B CN202110585879.0A CN202110585879A CN113504223B CN 113504223 B CN113504223 B CN 113504223B CN 202110585879 A CN202110585879 A CN 202110585879A CN 113504223 B CN113504223 B CN 113504223B
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/75—Systems in which material is subjected to a chemical reaction, the progress or the result of the reaction being investigated
- G01N21/77—Systems in which material is subjected to a chemical reaction, the progress or the result of the reaction being investigated by observing the effect on a chemical indicator
- G01N21/78—Systems in which material is subjected to a chemical reaction, the progress or the result of the reaction being investigated by observing the effect on a chemical indicator producing a change of colour
- G01N21/783—Systems in which material is subjected to a chemical reaction, the progress or the result of the reaction being investigated by observing the effect on a chemical indicator producing a change of colour for analysing gases
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61G—TRANSPORT, PERSONAL CONVEYANCES, OR ACCOMMODATION SPECIALLY ADAPTED FOR PATIENTS OR DISABLED PERSONS; OPERATING TABLES OR CHAIRS; CHAIRS FOR DENTISTRY; FUNERAL DEVICES
- A61G7/00—Beds specially adapted for nursing; Devices for lifting patients or disabled persons
- A61G7/05—Parts, details or accessories of beds
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Abstract
The invention provides a gas detection valve and an ozone disinfection bed sheet, wherein the gas detection valve comprises a base, a gas inlet and a gas outlet, wherein the base is provided with a vent hole penetrating through the base; the base is located to lid, detachable cover, and the lid includes apron and enclosing cover wall, and enclosing cover wall forms with the apron and places the region, places the region and is close to the exhaust end, and the exhaust end switch on to place the region, the test paper is located places the region. This application is discharged from the exhaust end through the air vent with gaseous through the base, and the circulation of gas to by apron and enclosing cover wall form place the region in, place and have deposited the test paper in the region, the test paper changes with gaseous contact back colour, through the change of observing the test paper colour, discernable gas is whether to lead and is passed through, has improved detection efficiency.
Description
Technical Field
The invention relates to the technical field of medical instruments, in particular to a gas detection valve and an ozone disinfection bedspread.
Background
The disinfection is an indispensable routine operation of the hospital, the bed disinfection of the hospital generally uses an ozone bed unit disinfection machine, the ozone bed unit disinfection machine is used as a common bed disinfection tool of the hospital, and a disposable disinfection bedspread is matched with the disinfection machine for disinfection.
However, in each disinfection, because ozone is colorless harmful gas, medical staff cannot visually know the disinfection effect, so that repeated disinfection or no disinfection at all can occur, and how to avoid the problem is the technical problem mainly solved at present.
Disclosure of Invention
The invention aims to provide a gas detection valve and an ozone disinfection bed sheet, which can detect whether gas passes through the detection valve or not by arranging test paper in a placement area, thereby improving the detection efficiency.
To achieve the above object, in a first aspect, the present invention provides a gas sensing valve comprising:
the base is provided with a vent hole penetrating through the base, one end of the vent hole is an air receiving end, the air receiving end is used for receiving air, and the other end of the vent hole is an exhaust end;
the cover body is detachably sleeved on the base and comprises a cover plate and an outer cover wall, the outer cover wall and the cover plate form a placing area, the placing area is close to the exhaust end, and the exhaust end is communicated with the placing area;
and the test paper is positioned in the placing area.
The invention has the beneficial effects that: when the gas receiving end of the base receives gas, the gas is discharged from the gas discharging end through the vent hole of the base, the gas flows into a placing area formed by the cover plate and the outer cover wall, test paper is stored in the placing area, the color of the test paper is changed after the test paper is contacted with the gas, and whether the gas is guided through or not can be distinguished by observing the color change of the test paper.
In one possible implementation, the method further comprises: an air leakage prevention device and an air tap;
one end of the air faucet is matched with the air receiving end, and the other end of the air faucet is used for ventilation;
the air leakage prevention device is embedded in the vent hole;
when one end of the air faucet is matched and connected with the air receiving end, the air leakage prevention device conducts the air vent. The beneficial effects are that: through setting up leak protection gas device and air cock, when avoiding not ventilating, the gas leakage condition of gas detection valve takes place.
In one possible implementation, the air leakage prevention device includes: the device comprises a nesting sleeve, a thimble, an elastic piece, a gasket and a mounting seat; wherein, the first and the second end of the pipe are connected with each other,
the nest is embedded in the vent hole, and a limit block is arranged in the nest;
the mounting seat is close to the exhaust end and is connected with the nesting;
the ejector pin is positioned in the embedded sleeve, the tail end of the ejector pin is movably arranged on the mounting seat, the moving direction is the same as the axial direction of the vent hole, and the top end of the ejector pin and the tail end of the ejector pin are respectively positioned on two side edges of the limiting block;
the cushion ring is sleeved on the thimble and positioned between the limiting block and the mounting seat;
the elastic piece is abutted to the washer, acting force towards the limiting block is applied to the washer, and the washer is abutted to the limiting block and blocks the nesting. The beneficial effects are that: the air leakage prevention device can block the air vent under the condition of no air leakage, so that air is sealed and stored, and the possible air leakage condition is avoided.
In a possible implementation, when one end of the air tap is connected with the air receiving end in a matching manner, the acting force of the ejector pin is opposite to that of the elastic piece by one end of the air tap, and the acting force of the ejector pin is larger than the elastic force of the elastic piece by the air tap. The beneficial effects are that: when the air faucet is used for ventilating, acting force is applied to the ejector pin through one end of the air faucet, the acting force is opposite to that of the elastic piece, and the gasket is separated from the limiting block and is communicated and nested.
In a possible implementation, the exhaust end is provided with an extending end along the outer side direction of the base, the extending end is in a step shape, a gap is formed between the extending end and the base, the test paper is located in the gap, and an air vent is arranged between the extending end and the exhaust end;
the outer cover wall and the extending end are provided with thread structures or buckle structures which are matched with each other;
the cover plate is made of a transparent material. The beneficial effects are that: through outer cover wall and extension end setting screw thread structure or buckle structure of mutually supporting, realized dismantling of base and lid, the installation replacement of the test paper of being convenient for, and through extending to be equipped with the blow vent between end and the exhaust end, make gas switch on to the clearance in, react with the test paper, more excellent, the apron is made by transparent material to be convenient for observe the colour of test paper.
In a possible implementation, the outer side surface of the base is provided with a first annular groove;
one end of the cover body, which is in contact with the outer side surface of the base, is provided with a first annular convex block, and the first annular convex block is matched with the first annular groove. The beneficial effects are that: make base and lid cooperation connect inseparabler compactness more, avoid gaseous revealing.
In one possible implementation, the method further includes: a film;
a notch is formed in the inner side face of the base, the notch extends from the exhaust end to the top end of the ejector pin, the thin film is arranged between the base and the nesting and is attached to the notch, and the thin film blocks the nesting;
the top end of the ejector pin is conical, a plurality of push rods perpendicular to the axis of the ejector pin are arranged on the side face of the top end of the ejector pin, and the push rods and the washers are located on two side edges of the limiting block respectively;
when one end of the air tap is matched and connected with the air receiving end, the top end of the ejector pin punctures the film. The beneficial effects are that: set up the breach, it is inseparabler to make the cooperation connect between base and the nestification, make the structure of gaseous check valve compacter, and the film setting is used for the shutoff nestification between base and nestification, when the one end of air cock with connect the gas end cooperation to be connected, the film is punctured on the top of thimble, thereby whether damaged through judging the film, can judge whether gaseous check valve leads through gas, establish the top of needle point into the tapered type, be convenient for puncture the film, and be equipped with a plurality of push rods of perpendicular to thimble axis through the side with the top of thimble, promote this thimble when the air cock of being convenient for inserts and move towards the opposite direction.
In a possible realization, be equipped with the socket on the mount pad, the diameter of socket is greater than the diameter of thimble tail end, the degree of depth of socket is greater than the migration distance of thimble, the elastic component cover is located the tail end of thimble and butt respectively the terminal surface of socket with the packing ring. The beneficial effects are that: the plugging nesting of the gasket is realized.
In one possible implementation, the mounting seat and the nest are provided with cooperating snap-fit structures. The beneficial effects are that: the connection of the mounting seat and the nesting is realized.
In a second aspect, the embodiment of the invention provides an ozone disinfection bedspread, which comprises the gas detection valve, a bedspread and a pressing ring; wherein the content of the first and second substances,
the bedspread is provided with a mounting hole, and the diameter of the mounting hole is larger than that of the air receiving end and smaller than that of the combined structure of the exhaust end and the extension end;
the exhaust end of the base is arranged in the bed cover, and the gas receiving end is positioned on the outer side of the bed cover through the mounting hole;
the cover body is positioned on the outer side of the bed cover and sleeved on the base;
the pressing ring is arranged between the cover body and the extending end, the pressing ring is provided with a second annular bump, and the extending end is provided with a second annular groove matched with the second annular bump; wherein the content of the first and second substances,
the outer cover wall of the cover body is abutted against the pressing ring, so that the pressing ring extrudes the bed cover to be attached to the extension end.
The invention has the beneficial effects that: through the ozone disinfection bedspread that uses this gaseous detection valve and bedspread preparation, through the state of the colour of observing the test paper or film, make medical personnel know fast whether carry out the ozone disinfection, improved work efficiency, and be equipped with second annular lug and second annular groove of mutually supporting at clamping ring and extension end, increased the leakproofness of product.
Drawings
FIG. 1 is a schematic cross-sectional view of a gas sensing valve according to an embodiment of the present invention;
FIG. 2 is an exploded view of an ozone disinfecting bed cover according to an embodiment of the present invention;
fig. 3 is a schematic structural view of an ozone disinfection bedspread according to an embodiment of the invention.
The reference numbers illustrate:
the air inlet structure comprises a base 100, a vent hole 101, an air receiving end 102, an air outlet end 103, an extending end 104, a first annular groove 105, a vent hole 106 and a notch 107;
the cover comprises a cover body 200, a cover plate 201, an outer cover wall 202 and a first annular bump 203;
the air leakage prevention device 400, the nesting 410, the limiting block 411, the thimble 420, the push rod 421, the elastic element 430, the gasket 440, the mounting seat 450 and the socket 451;
an air tap 500; a film 600; a clamping ring 700; bedspread 800, mounting hole 801.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings of the present invention, and it is obvious that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention. Unless defined otherwise, technical or scientific terms used herein shall have the ordinary meaning as understood by one of ordinary skill in the art to which this invention belongs. As used herein, the word "comprising" and similar words are intended to mean that the element or item listed before the word covers the element or item listed after the word and its equivalents, but does not exclude other elements or items.
In the hospital, medical personnel can disinfect the sheet of patient daily, and along with the aging of the world population, the increase of patient, medical personnel's work load increases thereupon, so medical personnel forget whether to disinfect the sheet in busy sometimes, lead to not being disinfected the sheet by the omission, or repeated disinfection sheet, influenced work efficiency.
In view of the above-mentioned existing problems, an embodiment of the present invention provides a gas detection valve, as shown in fig. 1, the gas detection valve including: base 100, lid 200 and test paper 300. The base 100 is provided with a vent hole 101, the vent hole 101 penetrates through the base 100, one end of the vent hole 101 is an air receiving end 102, and the other end of the vent hole 101 is an air exhausting end 103. The cover 200 is detachably sleeved on the outer side surface of the base 100, the cover 200 includes a cover plate 201 and an outer cover wall 202, and it can be understood that a hole adapted to the base 100 is formed in the cover plate 201, so as to realize the detachable sleeved connection between the cover 200 and the base 100. The outer cover wall 202 and the cover plate 201 form a placement area, the placement area is close to the gas exhaust end 103, the gas exhaust end 103 is located in the placement area, the gas exhaust end 103 is communicated with the placement area, namely, the gas is connected from the gas connection end 102 and exhausted from the gas exhaust end 103, and the exhausted gas is guided into the placement area again. Test paper 300 is located places the region, sends the reaction through test paper 300 and gas contact, and test paper 300 colour changes, and medical personnel can be according to test paper 300's colour change to judge whether lead through gas, and then through using this gaseous detection valve in gaseous disinfection is used, improved work efficiency greatly, and the medical personnel's of being convenient for observation is known. Preferably, the detachable connection between the base 100 and the cover 200 facilitates the replacement of the test strip 300,
in a possible implementation, on the basis of the above embodiment, an air leakage prevention device 400 and an air nozzle 500 are further included, one end of the air nozzle 500 is fitted with the air receiving end 102, in this embodiment, one end of the air nozzle 500 is inserted into the air receiving end 102, and the other end of the air nozzle 500 is used for ventilation, that is, an air pipe or other air guide device is inserted into the other end of the air nozzle 500. The air leakage prevention device 400 is embedded in the vent hole 101 formed in the base 100, and when one end of the air faucet 500 is connected to the air receiving end 102, the air leakage prevention device 400 conducts the vent hole 101. It can be understood that, through the matching connection of the air nozzle 500 and the air leakage prevention device 400, when ventilation is needed, the air leakage prevention device 400 conducts the ventilation hole 101, and the air leakage situation of the gas detection valve when ventilation is not needed is avoided through the air leakage prevention device 400.
Preferably, the air leakage preventing means 400 includes: nest 410, spike 420, spring 430, washer 440, and mount 450. The nest 410 is embedded in the vent hole 101, a limit block 411 is arranged in the nest 410, the mounting seat 450 is arranged close to the exhaust end 103, and the mounting seat 450 is connected with the nest 410. The thimble 420 is located in the nest 410, the tail end of the thimble 420 is movably disposed on the mounting seat 450, the moving direction is the same as the axial direction of the vent hole 101, the top end of the thimble 420 and the tail end of the thimble 420 are respectively located on two sides of the stop block 411, and it can be understood that the tail end of the thimble 420 is close to the exhaust end 103 of the base 100. The gasket 440 is sleeved on the thimble 420, the gasket 440 is located between the limiting block 411 and the mounting seat 450 and moves along with the thimble 420, the elastic element 430 abuts against the gasket 440, and the elastic element 430 exerts an acting force on the gasket 440 towards the limiting block 411, so that the gasket 440 and the thimble 420 move, the gasket 440 abuts against the limiting block 411 and blocks the nesting 410.
The air leakage prevention device 400 can block the air vent 101 under the condition that the air leakage of the air detection valve is not ventilated, the air detection valve can seal the air after the air is completely ventilated, and the possible air leakage condition is avoided.
Further, when one end of the air faucet 500 is coupled to the air receiving end 102, one end of the air faucet 500 is inserted into the air receiving end 102 and applies a force to the thimble 420 opposite to the elastic member 430, and the force is greater than the elastic force of the elastic member 430. Therefore, when one end of the air faucet 500 is inserted into the air receiving end 102 to be connected with the base 100, the ejector pin 420 moves, the gasket 440 is separated from the limiting block 411, the air leakage prevention device 400 is conducted, and ventilation is achieved.
In another possible implementation, on the basis of the above embodiment, the exhaust end 103 is provided with an extending end 104 along the outer direction of the base 100, the extending end 104 is stepped, specifically, a gap is provided between the stepped upper stepped structure and the base 100, and the test paper 300 is connected with the extending end 104 and is located in the gap. The outer cover wall 202 and the extension end 104 of the cover 200 are provided with mutually matching screw structures, so that the base 100 and the cover 200 can be detached, and the test paper 300 can be conveniently installed and replaced.
Preferably, the outer side surface of the base 100 is provided with a first annular groove 105, and it can be understood that the base 100 in the above embodiments and this embodiment is a cylinder provided with the vent hole 101, one end of the cover 200 contacting with the outer side surface of the base 100 is provided with a first annular protrusion 203, that is, the first annular protrusion 203 is annularly arranged on the end surface of the cover 200 provided with the hole, and the first annular protrusion 203 is matched with the first annular groove 105, so that the base 100 and the cover 200 are connected more tightly and compactly in a matching manner, and gas leakage is avoided.
Furthermore, the extension end 104 is a structure that the exhaust end 103 extends in an outward annular shape, and in order to ensure the conduction of the airflow, a vent 106 is arranged between the extension end 104 and the exhaust end 103, so that the gas can contact the test paper 300 through the vent 106, and then the reaction is sent to change the color of the test paper 300.
In another possible implementation, based on the above embodiment, the gas detection apparatus further includes a film 600, wherein the inner side surface of the base 100 is provided with a notch 107, the notch 107 opens a position area extending from the exhaust end 103 to the top end of the thimble 420 and located in the vent hole 101, the periphery of the film 600 is disposed between the base 100 and the nest 410 and is attached to the position area of the notch 107, the nest 410 is embedded in the notch 107, that is, the position area of the notch 107 and the nest 410 fix the film 600, and the middle portion of the film 600 blocks the nest 410. Through setting up breach 107, make the cooperation between base 100 and the nested 410 be connected inseparabler, make the structure of gas detection valve compacter, and film 600 sets up and is used for shutoff nested 410 between base 100 and nested 410, and when the one end of air cock 500 was connected with the cooperation of gas receiving end 102, the top of thimble 420 punctures film 600 to through judging whether damaged film 600, can judge whether gas detection valve leads through gas.
Preferably, the top end of the thimble 420 is tapered, a plurality of push rods 421 perpendicular to the axis of the thimble 420 are disposed on the side surface of the top end, and the push rods 421 and the washers 440 are respectively disposed on two side edges of the limit block 411. The top end of the needle point is tapered to facilitate the top end of the thimble 420 to pierce the thin film 600, and the side surface of the top end of the thimble 420 is provided with a plurality of push rods 421 perpendicular to the axis of the thimble 420 to facilitate the push of the thimble 420 to move in the opposite direction when the air nozzle 500 is inserted, thereby facilitating the ventilation of the gas detection valve. In this embodiment, several push rods 421 are combined into a cross shape.
Furthermore, the mounting seat 450 is provided with a socket 451, the diameter of the socket 451 is larger than the diameter of the tail end of the thimble 420, the depth of the socket 451 is larger than the moving distance of the thimble 420, and the elastic element 430 is sleeved on the tail end of the thimble 420 and abuts against the end surface of the socket 451 and the washer 440 respectively, so that the washer 440 and the thimble 420 are forced by the elastic element 430 to the limiting block 411 to move the thimble 420 and the washer 440.
Preferably, the mounting seat 450 and the nest 410 are provided with mutually matched buckling structures, in this embodiment, the cross section of the mounting seat 450 is in a "convex" shape, the upper end of the mounting seat 450 is inserted into the nest 410, and since the upper end of the mounting seat 450 is provided with the third annular bump, the nest 410 is provided with the third annular groove matched with the third annular bump, that is, the buckling connection between the mounting seat 450 and the nest 410 is realized. It should be noted that, in order to observe the color change of the test paper 300, the cover body 200 is made of a transparent material.
It should be noted that, when the gas detection valve in the above-mentioned embodiment is applied to the sterilization bed cover 800, the gas detection valve further includes a pressing ring 700, and the pressing ring 700 is used to ensure the tightness of the connection between the sterilization bed cover 800 and the gas detection valve.
In another embodiment disclosed in the present invention, referring to fig. 2 and 3, the ozone disinfection bedspread comprises any one of the gas detection valves in the above embodiments, and further comprises a bedspread 800 and a pressing ring 700, wherein the bedspread 800 is provided with a mounting hole 801, the diameter of the mounting hole 801 is larger than the diameter of the gas receiving end 102, the diameter of the mounting hole 801 is smaller than the diameter of the combined structure of the gas exhausting end 103 and the extending end 104, the gas exhausting end 103 and the extending end 104 of the base 100 are arranged in the bedspread 800, the gas receiving end 102 is located outside the bedspread 800 through the mounting hole 801, the cover 200 is located outside the bedspread 800 and sleeved on the base 100, the pressing ring 700 is arranged between the cover 200 and the extending end 104, and the outer cover wall 202 of the cover 200 abuts against the pressing ring 700, so that the pressing ring 700 presses the bedspread 800 to be attached to the extending end 104.
More importantly, in order to ensure the sealing performance of the ozone disinfection bedspread, a second annular bump is arranged on the pressing ring 700, in this embodiment, the second annular bump is two annular bumps arranged at intervals, and a second annular groove matched with the second annular bump is arranged on the extending end 104. When the pressing ring 700 presses the bed cover 800, the second annular bump is matched and connected with the second annular groove, and the bed cover near the mounting hole 801 is clamped between the second annular bump and the second annular groove, so that the sealing performance of the ozone disinfection bed cover is greatly improved.
In this embodiment, through the ozone disinfection bedspread prepared by using the gas detection valve and the bedspread 800, the medical staff can quickly know whether ozone disinfection is performed or not by observing the color of the test paper 300 or judging whether the film 600 is damaged or not, and the working efficiency is improved.
The above description is only a specific implementation of the embodiments of the present application, but the scope of the embodiments of the present application is not limited thereto, and any changes or substitutions within the technical scope disclosed in the embodiments of the present application should be covered by the scope of the embodiments of the present application. Therefore, the protection scope of the embodiments of the present application shall be subject to the protection scope of the claims.
Claims (9)
1. A gas sensing valve, comprising:
the base is provided with a vent hole penetrating through the base, one end of the vent hole is an air receiving end, the air receiving end is used for receiving air, and the other end of the vent hole is an exhaust end;
the cover body is detachably sleeved on the base and comprises a cover plate and an outer cover wall, the outer cover wall and the cover plate form a placing area, the placing area is close to the exhaust end, and the exhaust end is communicated with the placing area;
the test paper is positioned in the placing area;
the exhaust end is provided with an extension end along the outer side direction of the base, the extension end is in a step shape, a gap is formed between the extension end and the base, the test paper is positioned in the gap, and an air vent is arranged between the extension end and the exhaust end;
the outer cover wall and the extending end are provided with thread structures or buckle structures which are matched with each other;
the cover plate is made of a transparent material.
2. The gas sensing valve of claim 1, further comprising:
an air leakage prevention device and an air tap;
one end of the air faucet is matched with the air receiving end, and the other end of the air faucet is used for ventilation;
the air leakage prevention device is embedded in the vent hole;
when one end of the air faucet is matched and connected with the air receiving end, the air leakage prevention device conducts the air vent.
3. The gas detection valve according to claim 2, wherein the gas leakage prevention means comprises: nest, thimble, elastic component, packing ring and mount pad, wherein:
the embedded sleeve is embedded in the vent hole, and a limit block is arranged in the embedded sleeve;
the mounting seat is close to the exhaust end and is connected with the nesting;
the ejector pin is positioned in the embedded sleeve, the tail end of the ejector pin is movably arranged on the mounting seat, the moving direction is the same as the axial direction of the vent hole, and the top end of the ejector pin and the tail end of the ejector pin are respectively positioned on two side edges of the limiting block;
the cushion ring is sleeved on the thimble and positioned between the limiting block and the mounting seat;
the elastic piece is abutted to the gasket and acts on the gasket towards the limiting block, so that the gasket is abutted to the limiting block and blocks the nesting.
4. The gas sensing valve of claim 3, wherein:
when one end of the air nozzle is matched and connected with the air receiving end, the acting force of one end of the air nozzle on the ejector pin is opposite to the acting force of the elastic part, and the acting force of the air nozzle on the ejector pin is larger than the elastic force of the elastic part.
5. The gas sensing valve of claim 4, wherein:
a first annular groove is formed in the outer side surface of the base;
the cover body is provided with a first annular convex block at one end in contact with the outer side surface of the base, and the first annular convex block is matched with the first annular groove.
6. The gas sensing valve of claim 5, further comprising:
a film;
a notch is formed in the inner side face of the base, the notch extends from the exhaust end to the top end of the ejector pin, the thin film is arranged between the base and the nesting and is attached to the notch, and the thin film blocks the nesting;
the top end of the ejector pin is conical, a plurality of push rods perpendicular to the axis of the ejector pin are arranged on the side face of the top end of the ejector pin, and the push rods and the gaskets are respectively positioned on two side edges of the limiting block;
when one end of the air tap is matched and connected with the air receiving end, the top end of the ejector pin punctures the film.
7. The gas detection valve of claim 6, wherein a socket is provided on the mounting seat, the diameter of the socket is greater than the diameter of the tail end of the thimble, the depth of the socket is greater than the moving distance of the thimble, and the elastic member is sleeved on the tail end of the thimble and abuts against the end surface of the socket and the washer respectively.
8. The gas sensing valve of claim 7, wherein the mounting seat and the nest are provided with cooperating snap-fit structures.
9. An ozone disinfection bed cover comprising the gas detection valve of any one of claims 1-8, further comprising a bed cover and a clamping ring, wherein:
the bedspread is provided with a mounting hole, and the diameter of the mounting hole is larger than that of the gas receiving end and smaller than that of the combined structure of the exhaust end and the extension end;
the exhaust end of the base is arranged in the bed cover, and the gas receiving end is positioned on the outer side of the bed cover through the mounting hole;
the cover body is positioned on the outer side of the bed cover and sleeved on the base;
the clamping ring is arranged between the cover body and the extension end, the clamping ring is provided with a second annular bump, the extension end is provided with a second annular groove matched with the second annular bump, and the clamping ring is characterized in that:
the outer cover wall of the cover body is abutted against the pressing ring, so that the pressing ring extrudes the bed cover to be attached to the extension end.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110585879.0A CN113504223B (en) | 2021-05-27 | 2021-05-27 | Gas detection valve and ozone disinfection bedspread |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110585879.0A CN113504223B (en) | 2021-05-27 | 2021-05-27 | Gas detection valve and ozone disinfection bedspread |
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| CN113504223A CN113504223A (en) | 2021-10-15 |
| CN113504223B true CN113504223B (en) | 2022-11-25 |
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| CN116445270B (en) * | 2023-06-14 | 2023-08-15 | 四川大学华西医院 | Breathing tube flora detection device and detection method |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
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