CN112856000A - One-way valve assembly and handheld breath analysis device - Google Patents
One-way valve assembly and handheld breath analysis device Download PDFInfo
- Publication number
- CN112856000A CN112856000A CN202011621248.1A CN202011621248A CN112856000A CN 112856000 A CN112856000 A CN 112856000A CN 202011621248 A CN202011621248 A CN 202011621248A CN 112856000 A CN112856000 A CN 112856000A
- Authority
- CN
- China
- Prior art keywords
- valve assembly
- way valve
- mounting
- hole
- plugging
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 239000013013 elastic material Substances 0.000 claims abstract description 5
- 229920001971 elastomer Polymers 0.000 claims description 6
- 239000005060 rubber Substances 0.000 claims description 6
- 239000000463 material Substances 0.000 claims description 4
- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 claims description 3
- 229920000459 Nitrile rubber Polymers 0.000 claims description 3
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 3
- 239000011737 fluorine Substances 0.000 claims description 3
- 229910052731 fluorine Inorganic materials 0.000 claims description 3
- 238000009434 installation Methods 0.000 claims description 3
- 239000000741 silica gel Substances 0.000 claims description 3
- 229910002027 silica gel Inorganic materials 0.000 claims description 3
- 238000007789 sealing Methods 0.000 abstract description 8
- 230000000903 blocking effect Effects 0.000 abstract description 6
- 238000001914 filtration Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K15/00—Check valves
- F16K15/14—Check valves with flexible valve members
- F16K15/144—Check valves with flexible valve members the closure elements being fixed along all or a part of their periphery
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/08—Detecting, measuring or recording devices for evaluating the respiratory organs
- A61B5/082—Evaluation by breath analysis, e.g. determination of the chemical composition of exhaled breath
Abstract
The invention provides a one-way valve assembly which comprises a mounting plate, a through hole formed in the mounting plate, a plugging disc used for blocking the through hole and a mounting assembly used for mounting the plugging disc on the mounting plate, wherein the mounting plate comprises a protruding part protruding towards one side of the plugging disc around the through hole, and the plugging disc is made of an elastic material and abuts against the protruding part. The one-way valve assembly can improve the strength and the sealing property of the plugging disc and prevent the plugging disc from being damaged due to reverse pressure difference.
Description
Technical Field
The invention relates to a one-way valve assembly and a handheld breath analysis device.
Background
In the one-way valve in the existing hand-held breath analysis device, a blocking sheet for blocking the vent hole in the middle is a plane, so that the strength is low, the tolerance pressure is low, and the one-way valve is easy to lose effectiveness due to extrusion when the pressure is slightly large; secondly, when the sealing device is in a non-working state, the blocking sheet is not well attached to the mounting surface, so that the sealing effect is poor.
In view of the above, there is a need for an improved check valve assembly to solve the above problems.
Disclosure of Invention
The invention aims to provide a check valve component to solve the problems of low strength and poor sealing property of the existing check valve.
In order to achieve the above object, the present invention provides a check valve assembly, which includes a mounting plate, a through hole formed on the mounting plate, a plugging disc for blocking the through hole, and a mounting assembly for mounting the plugging disc on the mounting plate, wherein the mounting plate includes a protrusion portion protruding toward one side of the plugging disc around the through hole, and the plugging disc is made of an elastic material and abuts against the protrusion portion.
As a further improvement of the present invention, the lower surface of the blocking disk is recessed upward to form a groove portion for fitting with the projection portion.
As a further improvement of the present invention, the check valve assembly includes a mounting hole opened on the mounting plate, the mounting assembly includes connecting pieces fixed to the plugging tray and disposed at both sides of the plugging tray, and a fixing post fixed to the connecting pieces, and the fixing post penetrates through the mounting hole to fixedly connect the plugging tray and the mounting plate.
As a further improvement of the present invention, the mounting assembly further includes a limiting portion disposed on the fixing column and extending outward, and the limiting portion is disposed on a side of the mounting plate away from the connecting member and abuts against the mounting plate.
As a further improvement of the invention, the cross sections of the fixing column, the mounting hole and the limiting part are circular or elliptical.
As a further development of the invention, the mounting assembly further comprises a stretching arm connecting the blanking disc and the connecting element, the material of the stretching arm being the same as the material of the blanking disc.
As a further improvement of the invention, the plugging disc is made of any one of silica gel, rubber, fluorine rubber and nitrile-butadiene rubber.
As a further improvement of the invention, the number of the plugging discs and the through holes is at least two, and at least two plugging discs are connected by a connecting arm.
As a further improvement of the invention, the centers of the through hole and the mounting hole are located on the same straight line.
The invention also provides a hand-held breath analysis device, which is characterized in that: the handheld breath analysis device comprises a containing shell, an exhalation port formed in the containing shell, a filtering device arranged in the containing shell, and the one-way valve assembly arranged on the filtering device.
The invention has the beneficial effects that: according to the one-way valve assembly, the bulge part is arranged on the mounting plate, and the groove part is arranged on the plugging disc, so that the strength and the sealing property of the plugging disc can be improved, and the plugging disc is prevented from being damaged due to reverse pressure difference.
Drawings
FIG. 1 is a schematic structural view of the check valve assembly of the present invention;
FIG. 2 is a schematic structural view of a one-way valve assembly having two occluding disks;
FIG. 3 is a side cross-sectional schematic view of the check valve assembly of the present invention in the absence of a pressure differential across the occluding disk;
FIG. 4 is a side cross-sectional schematic view of the check valve assembly of the present invention with a pressure differential across the occluding disk.
Detailed Description
The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and it should be understood 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.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art. In addition, the technical features involved in the different embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.
As shown in fig. 1 to 4, the hand-held breath analysis device of the present invention includes a housing case, an exhalation vent provided on the housing case, a filter device provided in the housing case, and a check valve assembly 100 mounted on the filter device. The handheld breath analysis device can realize detection of exhaled air of a user.
The mounting plate 1 includes a boss 11 protruding toward the plugging disc 4 side around the through hole 2.
The plugging disc 4 is made of elastic material and is abutted against the protruding part 11. The lower surface of the plugging disc 4 is recessed upwards to form a groove portion 41 for matching with the protruding portion 11.
By the engagement of the groove portion 41 and the projection portion 11, the strength of the plugging disc 4 can be improved, the problem that the plugging disc 4 is squeezed into the through hole 2 due to an excessive pressure on the side of the plugging disc 4 can be prevented, and the sealing property can be improved.
In this embodiment, the through hole 2 and the plugging disc 4 may be rectangular or circular. In addition, the protruding portion 11 and the recessed portion 41 may be rectangular, circular, or any other shape.
In a first embodiment, the number of the plugging discs 4 may be one, in other embodiments, the number of the plugging discs 4 and the through holes 2 is at least two, and at least two of the plugging discs 4 are connected by a connecting arm 42.
The mounting assembly 5 includes connecting members 51 disposed on both sides of the plugging tray 4 and fixed to the plugging tray 4, fixing posts 52 fixed to the connecting members 51, stoppers 53 disposed on the fixing posts 52 and extending outward, and stretching arms 54 connecting the plugging tray 4 and the connecting members 51.
The fixing column 52 penetrates through the mounting hole 3 to fixedly connect the plugging disc 4 and the mounting plate 1. Specifically, the limiting portion 53 is disposed on a side of the mounting plate 1 away from the connecting member 51 and abuts against the mounting plate 1. The fixing post 52 can be prevented from being detached from the mounting hole 3 by providing the stopper 53. In this embodiment, the lower part of the limiting portion 53 is smaller, and the upper part of the limiting portion 53 is larger, so that the limiting portion 53 can be pressed downwards to pass through the mounting hole 3 when the plugging disc 4 is mounted.
In this embodiment, the cross-sections of the fixing post 52, the mounting hole 3, and the limiting portion 53 are circular or elliptical. Of course, the shape can be other shapes, and the installation requirement can be met.
The plugging disc 4 is made of any one of silica gel, rubber, fluorine rubber and nitrile-butadiene rubber, and the preferable material of the stretching arm 54 is the same as that of the plugging disc 4. When the pressure is greater on the side of the closing disk 4 close to the through hole 2, the stretching arm 54 is deformed, so that the groove portion 41 and the protruding portion 11 are separated. The plugging disc 4 is made of elastic materials, so that the sealing performance can be improved.
The centers of the through hole 2 and the mounting hole 3 are positioned on the same straight line.
The through holes 2 are communicated with the filtering device, so that the two sides of the plugging disc 4 are communicated. The medium in the filter device may be a gas or a liquid.
The one-way valve assembly 100 of the present invention can improve the strength and sealing property of the plugging disc 4 by providing the convex portion 11 on the mounting plate 1 and the groove portion 41 on the plugging disc 4, thereby preventing the plugging disc 4 from being damaged by a reverse pressure difference.
The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (10)
1. A one-way valve assembly characterized by: check valve subassembly includes the mounting panel, sets up through-hole on the mounting panel, be used for sheltering from the shutoff dish of through-hole, be used for with the shutoff dish is installed installation component on the mounting panel, the mounting panel is including encircleing the through-hole orientation the protruding bellying of stretching in shutoff dish one side, the shutoff dish adopt elastic material to make and with the bellying supports and holds.
2. The one-way valve assembly of claim 1, wherein: the lower surface of the plugging disc is upwards sunken to form a groove part matched with the protruding part.
3. The one-way valve assembly of claim 1, wherein: the check valve subassembly is including seting up mounting hole on the mounting panel, the mounting subassembly is including setting up shutoff dish both sides and with the connecting piece that the shutoff dish is fixed, with the fixed column that the connecting piece is fixed, the fixed column runs through the mounting hole is with fixed connection the shutoff dish with the mounting panel.
4. The one-way valve assembly of claim 3, wherein: the mounting assembly further comprises a limiting part arranged on the fixing column and extending towards the outer side, and the limiting part is arranged on one side, away from the connecting piece, of the mounting plate and abuts against the mounting plate.
5. The one-way valve assembly of claim 4, wherein: the cross sections of the fixing column, the mounting hole and the limiting part are circular or oval.
6. The one-way valve assembly of claim 4, wherein: the mounting assembly further comprises a stretching arm connecting the plugging disc and the connecting piece, and the material of the stretching arm is the same as that of the plugging disc.
7. The one-way valve assembly of claim 1, wherein: the plugging disc is made of any one of silica gel, rubber, fluorine rubber and nitrile-butadiene rubber.
8. The one-way valve assembly of claim 4, wherein: the number of the plugging discs and the number of the through holes are at least two, and the at least two plugging discs are connected through connecting arms.
9. The one-way valve assembly of claim 8, wherein: the centers of the through hole and the mounting hole are positioned on the same straight line.
10. A handheld breath analysis device, characterized by: the hand-held breath analysis device comprises a housing case, an exhalation port formed in the housing case, a filter device arranged in the housing case, and a one-way valve assembly according to any one of claims 1 to 9 mounted on the filter device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011621248.1A CN112856000A (en) | 2020-12-31 | 2020-12-31 | One-way valve assembly and handheld breath analysis device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011621248.1A CN112856000A (en) | 2020-12-31 | 2020-12-31 | One-way valve assembly and handheld breath analysis device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112856000A true CN112856000A (en) | 2021-05-28 |
Family
ID=75999113
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011621248.1A Pending CN112856000A (en) | 2020-12-31 | 2020-12-31 | One-way valve assembly and handheld breath analysis device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112856000A (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1035974A (en) * | 1963-05-31 | 1966-07-13 | Ford Motor Co | Non-return valves for drain openings |
| US20050155657A1 (en) * | 2004-01-15 | 2005-07-21 | Knf Flodos Ag | Valve |
| CN102913649A (en) * | 2012-10-31 | 2013-02-06 | 浙江爱力浦泵业有限公司 | Safety backpressure check valve |
| US20140238497A1 (en) * | 2011-07-13 | 2014-08-28 | Oxford Nanopore Technologies Limited | One-way valve |
| CN104244819A (en) * | 2012-04-24 | 2014-12-24 | 松下健康医疗器械株式会社 | Handle device and breath analysis device |
| CN105508669A (en) * | 2015-12-31 | 2016-04-20 | 宁波市鄞州华坚阀门有限公司 | Diaphragm type check valve |
| CN111433457A (en) * | 2017-12-06 | 2020-07-17 | 克诺尔商用车制动系统有限公司 | Reed type discharge valve |
-
2020
- 2020-12-31 CN CN202011621248.1A patent/CN112856000A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1035974A (en) * | 1963-05-31 | 1966-07-13 | Ford Motor Co | Non-return valves for drain openings |
| US20050155657A1 (en) * | 2004-01-15 | 2005-07-21 | Knf Flodos Ag | Valve |
| US20140238497A1 (en) * | 2011-07-13 | 2014-08-28 | Oxford Nanopore Technologies Limited | One-way valve |
| CN104244819A (en) * | 2012-04-24 | 2014-12-24 | 松下健康医疗器械株式会社 | Handle device and breath analysis device |
| CN102913649A (en) * | 2012-10-31 | 2013-02-06 | 浙江爱力浦泵业有限公司 | Safety backpressure check valve |
| CN105508669A (en) * | 2015-12-31 | 2016-04-20 | 宁波市鄞州华坚阀门有限公司 | Diaphragm type check valve |
| CN111433457A (en) * | 2017-12-06 | 2020-07-17 | 克诺尔商用车制动系统有限公司 | Reed type discharge valve |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20210528 |