CN110145620A - A kind of overall plastic diaphragm type one-way exhaust check (non-return) valve having emergency ventilatory function - Google Patents
A kind of overall plastic diaphragm type one-way exhaust check (non-return) valve having emergency ventilatory function Download PDFInfo
- Publication number
- CN110145620A CN110145620A CN201910260031.3A CN201910260031A CN110145620A CN 110145620 A CN110145620 A CN 110145620A CN 201910260031 A CN201910260031 A CN 201910260031A CN 110145620 A CN110145620 A CN 110145620A
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- Prior art keywords
- valve
- valve block
- emergency
- return
- installation cavity
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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
- F16K15/147—Check valves with flexible valve members the closure elements being fixed along all or a part of their periphery the closure elements having specially formed slits or being of an elongated easily collapsible form
-
- 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
- F16K24/00—Devices, e.g. valves, for venting or aerating enclosures
- F16K24/04—Devices, e.g. valves, for venting or aerating enclosures for venting only
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Check Valves (AREA)
- Respiratory Apparatuses And Protective Means (AREA)
- Professional, Industrial, Or Sporting Protective Garments (AREA)
Abstract
The present invention relates to a kind of overall plastic diaphragm type one-way exhaust check (non-return) valves for having emergency ventilatory function, including valve body, the first valve block installation cavity and gas cleanup component installation cavity are equipped in valve body, the side of valve body is equipped with outer snap-fittings, outer snap-fittings are equipped with exhaust outlet, first valve block is installed in the first valve block installation cavity, the lower section of first valve block is equipped with support chip, support chip is equipped with multiple hollow-out parts and support reinforcing portion, first valve block is equipped with exhaust crack, is vented crack for the first valve block and is split up into multiple exhaust raft valves；The side of valve body is located at the top of the first valve block installation cavity the dome portion that is equipped with, it is fixed with support chip on the inner wall in dome portion and destroys column, this valve is under the state of emergency for losing gas source, pass through the dome portion on firmly pressing valve body, the unidirectional inverse-stopping functions of the first valve block can be changed rapidly, the second valve block sealing structure can be manually destroyed rapidly simultaneously, to realize air-flow two-way flow, met wearer under the state of emergency and breathed needs.
Description
Technical field
The present invention relates to protective garment security fields, especially a kind of overall plastic diaphragm type for having emergency ventilatory function is unidirectionally arranged
Gas check (non-return) valve.
Background technique
Closed protective clothes are public's life in the case of staff, accident rescue personnel and accident under protection hazardous environment
The important protective gear of safety and health, is widely used in the industries such as chemical industry, petroleum, nuclear industry, military project, mine, raw in industry
It plays an important role in production and accident emergency rescue.
Closed protective clothes work under poisonous and harmful environment, need to provide clean breathing air for protective garment wearer,
To prevent gas source from interrupting the life security of threat protective garment wearer, existing closed protective clothes generally use two kinds of technical solutions.
A kind of scheme is supplied using contingency gas sources, such as enters hazardous area by protective garment wearer carrying gas cylinder, when normal
When gas source interrupts, gas supply can be switched to gas cylinder, meeting protective garment wearer's short time breathes needs.
Another scheme uses protector of respiration, such as carries breathing mask by protective garment wearer and enters hazardous area, when
When normal gas source interrupts, closed protective clothes are destroyed, are then worn a gas mask, to prevent protective garment wearer sucking from having
Evil substance.
There is drawback in this two schemes:
Scheme one needs to carry gas cylinder and enters hazardous environment, increases the burden of protective garment wearer, is unfavorable for personnel's
Quickly withdraw.Simultaneously using gas cylinder be used as contingency gas sources, not only increased equipment investment, gas cylinder etc. enter pollute environment after need
Carry out decontamination processing.
Scheme two, which needs to take closed protective, to be destroyed, although meeting personnel breathes needs, inevitable band
Come the harm of personnel's skin contamination, especially strong acid-base corrosive environment, noxious material environment, radioaerosol dust environment
Under, the destruction to closed protective clothes is unacceptable.
Exhaust valve is the important composition component of closed protective clothes, and exhaust valve not only needs to guarantee the airtightness of closed protective clothes
Can, meet protective garment exhaust gas inside needs, while also needing to prevent external toxic and harmful gas from entering by exhaust valve closed anti-
Shield clothes are internal.Due to bleed pressure variation, protective garment wearer movement or change of position etc., it is likely to form inside protective garment negative
Pressure, exhaust valve must also prevent counter-current flow from entering inside protective garment at this time.Some exhaust valves are needed using gold such as spring, valve blocks
Belong to material, metal material can lead to strength reduction, sealing performance lowers, thus band when corrosive environment works due to corrosion
Carry out hidden danger.
Summary of the invention
The purpose of the present invention is to solve defect of the existing technology, provides and a kind of have the complete of emergency ventilatory function
Plastic film chip one-way exhaust check (non-return) valve.
To achieve the goals above, The technical solution adopted by the invention is as follows:
A kind of overall plastic diaphragm type one-way exhaust check (non-return) valve having emergency ventilatory function, including valve body, valve body is interior to be equipped with ring
Shape fixed plate, ring-type fixing plate surround the first valve block installation cavity, and the frame of ring-type fixing plate and valve body surrounds gas cleanup component
Installation cavity, the side of valve body are equipped with outer snap-fittings, and outer snap-fittings are equipped with exhaust outlet, ring-type fixing plate be equipped with
The through-hole of gas cleanup component installation cavity connection, gas cleanup component installation cavity is interior to install first gas purification assembly；
One side opening of the valve body, another side seal, the aperture in the open side and vest of valve body are tightly connected；
First valve block is installed, the lower section of the first valve block is equipped with support chip, the week of support chip in the first valve block installation cavity
The inner wall of face and ring-type fixing plate is tightly connected, and support chip is equipped with multiple hollow-out parts and support reinforcing portion, first valve block
It is equipped with exhaust crack, crack is vented by the first valve block and is split up into multiple exhaust raft valves；
The side of the valve body is located at the top of the first valve block installation cavity the dome portion that is equipped with, on the inner wall in dome portion
It is fixed with support chip and destroys column, support chip destroys the free end of column close to the surface of first valve block and support chip.
Further, the exhaust ports are equipped with the second valve block, and outer snap-fittings connect the second gas by way of clamping
Body purification assembly.
Further, second valve block is elastoplastic thin slice, and the second valve block is fixed on wild card by card slot mode and fastens
The exhaust outlet of firmware.
Further, the outer snap-fittings are equipped with card slot.
Further, the shape of the first gas purification assembly and gas cleanup component installation cavity coincide, and first gas is net
The material for changing component is active carbon or porous cotton.
Further, the second gas purification assembly includes shell and is placed on the intracorporal filler of shell, the side of shell
Opening, the other side are equipped with clamping block, and clamping block engages with the card slot in the outer snap-fittings.
Further, the aperture junction in the open side and vest of the valve body is equipped with gasket.
Further, first valve block is elastoplastic thin slice, and exhaust crack is in cross.
Further, there are gaps between first valve block and dome portion.
Further, first valve block is bonded first of the sealing formed by the outside of vest inwardly with support chip closely
The exhaust outlet of face, the second valve block and outer snap-fittings forms second sealing surface.
The invention has the benefit that (1) this valve under the state of emergency for losing gas source, is pressed on valve body by exerting oneself
Dome portion, the unidirectional inverse-stopping functions of the first valve block can be changed rapidly, while can manually destroy the second valve block sealing structure rapidly,
To realize air-flow two-way flow, meets wearer under the state of emergency and breathe needs.
(2) this valve is equipped with gas cleaning plant, may be implemented to purify outside contamination air in emergency situations
Processing, to meet wearer's safety in the short time.
(3) this valve uses two-stage sealing structure, strengthens the reliability of sealing, can effectively prevent the instantaneous negative pressure of protective garment
When pollutant entered inside frog-suit by gas vent.
(4) this valve can satisfy various capacity requirements, especially by adjusting the flap breach length of the first valve block
Meet long tube gas supply positive-pressure protective clothes high-flow air-exhaust needs.
(5) this valve can adjust valve opening pressure, while the first valve by using material thickness and the different valve blocks of elasticity
Different materials can be used in piece and the second valve block, and when protective garment internal and external pressure difference is greater than certain pressure, air pressure inside can just be pushed away
Valve opening piece forms exhaust.
(6) this valve is overall plastic structure, and no metalwork is conducive to protective garment burning disposal.
(7) valve mechanism is simple and reliable, and production and processing difficulty is lower, low in cost.
Detailed description of the invention
Fig. 1 is the structural diagram of the present invention；
Fig. 2 is the schematic diagram of internal structure of valve body of the present invention；
Structural schematic diagram when Fig. 3 is present invention installation first gas purification assembly；
Fig. 4 is the structural schematic diagram of the first valve block of the invention；
Fig. 5 is the structural schematic diagram of support chip of the present invention；
Fig. 6 is the structural schematic diagram of first gas purification assembly of the present invention；
Fig. 7 is the schematic diagram of gasket of the present invention；
Fig. 8 is the schematic diagram that the second valve block is installed in the outer snap-fittings of the present invention；
Fig. 9 is the connection schematic diagram of second gas purification assembly and outer snap-fittings of the present invention；
Figure 10 is the structural schematic diagram of second gas purification assembly of the present invention.
Specific embodiment
As shown in Figures 1 to 10, a kind of overall plastic diaphragm type one-way exhaust check (non-return) valve having emergency ventilatory function, including valve
Body 1, valve body 1 is interior to be equipped with ring-type fixing plate 2, and ring-type fixing plate 2 surrounds the first valve block installation cavity 3, ring-type fixing plate 2 and valve body
Frame surrounds gas cleanup component installation cavity 4, and the side of valve body 1 is equipped with outer snap-fittings 5, and outer snap-fittings 5 are equipped with
Exhaust outlet 6, ring-type fixing plate 2 are equipped with the through-hole 7 being connected to gas cleanup component installation cavity 4, gas cleanup component installation cavity 4
Interior installation first gas purification assembly 8；
One side opening of valve body 1, another side seal, the aperture in the open side and vest of valve body 1 are tightly connected；
First valve block 9 is installed, the lower section of the first valve block 9 is equipped with support chip 10, support chip 10 in first valve block installation cavity 3
The inner wall of circumferential surface and ring-type fixing plate 2 is tightly connected, and support chip 10 is equipped with multiple hollow-out parts 11 and support reinforcing portion 12, and first
Valve block 9 is equipped with exhaust crack 13, is vented crack 13 for the first valve block 9 and is split up into multiple exhaust raft valves；
The side of valve body 1 is located at the top of the first valve block installation cavity 3 the dome portion 14 that is equipped with, the inner wall in dome portion 14
On be fixed with support chip destroy column 15, support chip destroy column 15 free end close to the surface of the first valve block 9 and support chip 10.
Further, the second valve block 16 is equipped at exhaust outlet 6, outer snap-fittings 5 connect the second gas by way of clamping
Body purification assembly 17.Second valve block 16 is preferably elastoplastic thin slice, and different materials can be used in the second valve block 16, such as the second valve
Piece 16 uses thicker PVC valve block, and when protective garment internal and external pressure difference is greater than certain pressure, air pressure inside can just push valve block, shape open
At exhaust, the second valve block 16 is fixed on the exhaust outlet 6 of outer snap-fittings by card slot mode.Outer snap-fittings 5 are equipped with
Card slot 18.
Further, the shape of first gas purification assembly 8 and gas cleanup component installation cavity 4 coincide, first gas purification
Component 8 is made of universal long life gas scavenging material (such as active carbon, porous cotton).
Further, second gas purification assembly 17 includes shell and is placed on the intracorporal filler of shell, and the side of shell is opened
Mouthful, the other side is equipped with clamping block 19, and clamping block 19 engages with the card slot 18 in outer snap-fittings 5.
In the present invention, the aperture junction in the open side and vest of valve body 1 is equipped with gasket 20, the first valve block 9
For elastoplastic thin slice, crack 13 is vented in cross.There are gaps between first valve block 9 and dome portion 14.First valve block 9 with
The fitting closely of support chip 10 is formed by first of sealing surface on the outside of vest inwardly, the second valve block 16 and outer snap-fittings
Exhaust outlet 6 formed second sealing surface.
The invention has the characteristics that:
(1) the non-return function function of one-way exhaust:
It in normal state, is positive pressure inside protective garment, vest internal gas is by vest aperture, through support chip 10
The clack valve of the first valve block 9 is pushed after hollow-out parts 11, the flap of the first valve block 9 is opened under the airflow function of certain pressure, with branch
First of sealing surface that blade 10 is formed is opened, and then air-flow enters gas cleanup component from the through-hole 7 on ring-type fixing plate 2 and pacifies
It behave affectedly in 4 and is purified by first gas purification assembly 8, purified gas enters exhaust outlet 6 and pushes the second valve block 16 outward
It opens, vest internal gas realizes unidirectional discharge.
There is instantaneous pressure inside the reasons such as gas supply supply pressure fluctation, wearer movement or position chanP, protective garment
When fluctuation or negative pressure, the second valve block 16 is closed rapidly by natural resiliency and inside and outside differential pressure, and in the exhaust with outer snap-fittings
Mouth 6 forms second sealing surfaces；Due to losing air-flow, the first valve block 9 restores smooth under the action of own resilience, and with branch
Blade 10 fits closely, and forms first of sealing surface.Prevent the reverse flow of of short duration negative pressure state downstream.
(2) emergency ventilation purification function
Under the state of emergency for losing gas source, the second valve block 16 of engaging is shut down first, second gas is then purified into group
Part 17 is docked with the card slot 18 of outer snap-fittings.
Then dome portion 14 is firmly pressed, under the action of in dome portion, 14 inside support chip destroys column 15,10 quilt of support chip
It destroys, sealing surface is destroyed at this time, and the first valve block 9 realizes bidirectional opening.
Air-flow can realize two-way flow inside and outside protective garment at this time, and outer gas stream passes through second gas purification assembly 17, first
Enter inside vest after 8 two-step purification of gas cleanup component.
This valve, by the dome portion on firmly pressing valve body, can change rapidly the under the state of emergency for losing gas source
The unidirectional inverse-stopping functions of one valve block, while the second valve block sealing structure can be manually destroyed rapidly, thus realize air-flow two-way flow,
Meet wearer under the state of emergency and breathes needs；This valve is equipped with gas cleaning plant, may be implemented in emergency situations externally
Boundary pollutes air and carries out purified treatment, to meet wearer's safety in the short time；This valve uses two-stage sealing structure, strengthens
The reliability of sealing, pollutant is entered inside frog-suit by gas vent when can effectively prevent protective garment instantaneous negative pressure；This valve is logical
The flap breach length for crossing the first valve block of adjustment can satisfy various capacity requirements, and it is anti-especially to meet long tube gas supply positive pressure
Shield takes high-flow air-exhaust needs.This valve can adjust valve opening pressure by using material thickness and the different valve blocks of elasticity, together
When the first valve block and the second valve block different materials can be used, when protective garment internal and external pressure difference be greater than certain pressure when, internal gas
Pressure can just push valve block open, form exhaust.This valve is overall plastic structure, and no metalwork is conducive to protective garment burning disposal.The valve
Simple and reliable for structure, production and processing difficulty is lower, low in cost.
The basic principles, main features and advantages of the present invention have been shown and described above.The technology of the industry
Personnel are it should be appreciated that the present invention is not limited to the above embodiments, and what is described in the above embodiment and the description is only the present invention
Principle, various changes and improvements may be made to the invention without departing from the spirit and scope of the present invention, these variation and
Improvement is both fallen in the range of claimed invention.The present invention claims protection scope by appended claims and its
Equivalent defines.
Claims (10)
1. a kind of overall plastic diaphragm type one-way exhaust check (non-return) valve for having emergency ventilatory function, including valve body, which is characterized in that valve body
Interior to be equipped with ring-type fixing plate, ring-type fixing plate surrounds the first valve block installation cavity, and the frame of ring-type fixing plate and valve body surrounds gas
Purification assembly installation cavity, the side of valve body are equipped with outer snap-fittings, and outer snap-fittings are equipped with exhaust outlet, ring-type fixing plate
It is equipped with the through-hole being connected to gas cleanup component installation cavity, first gas purification group is installed in gas cleanup component installation cavity
Part；
One side opening of the valve body, another side seal, the aperture in the open side and vest of valve body are tightly connected；
First valve block is installed in the first valve block installation cavity, the lower section of the first valve block is equipped with support chip, the circumferential surface of support chip with
The inner wall of ring-type fixing plate is tightly connected, and support chip is equipped with multiple hollow-out parts and support reinforcing portion, is set on first valve block
There is exhaust crack, is vented crack for the first valve block and is split up into multiple exhaust raft valves；
The side of the valve body is located at the top of the first valve block installation cavity the dome portion that is equipped with, and fixes on the inner wall in dome portion
There is support chip to destroy column, support chip destroys the free end of column close to the surface of first valve block and support chip.
2. a kind of overall plastic diaphragm type one-way exhaust check (non-return) valve for having emergency ventilatory function according to claim 1, special
Sign is that the exhaust ports are equipped with the second valve block, and outer snap-fittings connect second gas purification group by way of clamping
Part.
3. a kind of overall plastic diaphragm type one-way exhaust check (non-return) valve for having emergency ventilatory function according to claim 2, special
Sign is that second valve block is elastoplastic thin slice, and the second valve block is fixed on the row of outer snap-fittings by card slot mode
Port.
4. a kind of overall plastic diaphragm type one-way exhaust check (non-return) valve for having emergency ventilatory function according to claim 2, special
Sign is that the outer snap-fittings are equipped with card slot.
5. a kind of overall plastic diaphragm type one-way exhaust check (non-return) valve for having emergency ventilatory function according to claim 4, special
Sign is that the shape and gas cleanup component installation cavity of the first gas purification assembly are coincide, first gas purification assembly
Material is active carbon or porous cotton.
6. a kind of overall plastic diaphragm type one-way exhaust check (non-return) valve for having emergency ventilatory function according to claim 4, special
Sign is that the second gas purification assembly includes shell and is placed on the intracorporal filler of shell, and a side opening of shell is another
Side is equipped with clamping block, and clamping block engages with the card slot in the outer snap-fittings.
7. a kind of overall plastic diaphragm type one-way exhaust check (non-return) valve for having emergency ventilatory function according to claim 1, special
Sign is that the aperture junction in the open side and vest of the valve body is equipped with gasket.
8. a kind of overall plastic diaphragm type one-way exhaust check (non-return) valve for having emergency ventilatory function according to claim 1, special
Sign is that first valve block is elastoplastic thin slice, and exhaust crack is in cross.
9. a kind of overall plastic diaphragm type one-way exhaust check (non-return) valve for having emergency ventilatory function according to claim 1, special
Sign is that there are gaps between first valve block and dome portion.
10. a kind of overall plastic diaphragm type one-way exhaust check (non-return) valve for having emergency ventilatory function according to claim 9, special
Sign is, first valve block is bonded first of the sealing surface formed by the outside of vest inwardly with support chip closely, second
Valve block and the exhaust outlet of outer snap-fittings form second sealing surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910260031.3A CN110145620B (en) | 2019-04-02 | 2019-04-02 | Full-plastic diaphragm type one-way exhaust check valve with emergency ventilation function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910260031.3A CN110145620B (en) | 2019-04-02 | 2019-04-02 | Full-plastic diaphragm type one-way exhaust check valve with emergency ventilation function |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110145620A true CN110145620A (en) | 2019-08-20 |
| CN110145620B CN110145620B (en) | 2020-09-04 |
Family
ID=67589325
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910260031.3A Active CN110145620B (en) | 2019-04-02 | 2019-04-02 | Full-plastic diaphragm type one-way exhaust check valve with emergency ventilation function |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110145620B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111743579A (en) * | 2020-07-07 | 2020-10-09 | 德阳市人民医院 | Protective pathogen sample collection device for infectious department |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2715152A1 (en) * | 1976-08-06 | 1978-10-19 | Kern & Grosskinsky | Gas-tight clothing relief valve - has collar enclosing protective cap and shielding discharge slots |
| EP1647310A1 (en) * | 2004-10-15 | 2006-04-19 | Moldex-Metric Ag & Co. Kg | Breathing mask with exhalation valve |
| JP2014161356A (en) * | 2013-02-21 | 2014-09-08 | Shigematsu Works Co Ltd | Respiratory protective device |
| CN204181009U (en) * | 2014-04-14 | 2015-03-04 | 左国刚 | A kind of self-cleaning Respiration assistance cleaning system and mouth mask and medicine applicator through nose |
| CN105682750A (en) * | 2013-08-27 | 2016-06-15 | 霍尼韦尔国际公司 | Fresh air port mechanism for facepiece used on self-contained open-circuit compressed air breathing apparatus |
| CN208058036U (en) * | 2018-03-27 | 2018-11-06 | 厦门智赫科技有限公司 | A kind of one-way exhausting device |
-
2019
- 2019-04-02 CN CN201910260031.3A patent/CN110145620B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2715152A1 (en) * | 1976-08-06 | 1978-10-19 | Kern & Grosskinsky | Gas-tight clothing relief valve - has collar enclosing protective cap and shielding discharge slots |
| EP1647310A1 (en) * | 2004-10-15 | 2006-04-19 | Moldex-Metric Ag & Co. Kg | Breathing mask with exhalation valve |
| JP2014161356A (en) * | 2013-02-21 | 2014-09-08 | Shigematsu Works Co Ltd | Respiratory protective device |
| CN105682750A (en) * | 2013-08-27 | 2016-06-15 | 霍尼韦尔国际公司 | Fresh air port mechanism for facepiece used on self-contained open-circuit compressed air breathing apparatus |
| CN204181009U (en) * | 2014-04-14 | 2015-03-04 | 左国刚 | A kind of self-cleaning Respiration assistance cleaning system and mouth mask and medicine applicator through nose |
| CN208058036U (en) * | 2018-03-27 | 2018-11-06 | 厦门智赫科技有限公司 | A kind of one-way exhausting device |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111743579A (en) * | 2020-07-07 | 2020-10-09 | 德阳市人民医院 | Protective pathogen sample collection device for infectious department |
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| Publication number | Publication date |
|---|---|
| CN110145620B (en) | 2020-09-04 |
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