CN109253292A - A kind of ship vent valve and air pressure balance method - Google Patents
A kind of ship vent valve and air pressure balance method Download PDFInfo
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- CN109253292A CN109253292A CN201811431857.3A CN201811431857A CN109253292A CN 109253292 A CN109253292 A CN 109253292A CN 201811431857 A CN201811431857 A CN 201811431857A CN 109253292 A CN109253292 A CN 109253292A
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- 238000000034 method Methods 0.000 title claims abstract description 13
- 230000000694 effects Effects 0.000 claims abstract description 12
- 230000007423 decrease Effects 0.000 claims description 14
- 230000006835 compression Effects 0.000 claims description 10
- 238000007906 compression Methods 0.000 claims description 10
- 238000007789 sealing Methods 0.000 abstract description 11
- 230000008859 change Effects 0.000 abstract description 4
- 238000009423 ventilation Methods 0.000 abstract description 4
- 238000013329 compounding Methods 0.000 description 3
- 230000002159 abnormal effect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 235000013399 edible fruits Nutrition 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 238000009738 saturating Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000005303 weighing Methods 0.000 description 1
Classifications
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- 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
- F16K17/00—Safety valves; Equalising valves, e.g. pressure relief valves
- F16K17/20—Excess-flow valves
- F16K17/22—Excess-flow valves actuated by the difference of pressure between two places in the flow line
- F16K17/24—Excess-flow valves actuated by the difference of pressure between two places in the flow line acting directly on the cutting-off member
- F16K17/28—Excess-flow valves actuated by the difference of pressure between two places in the flow line acting directly on the cutting-off member operating in one direction only
- F16K17/30—Excess-flow valves actuated by the difference of pressure between two places in the flow line acting directly on the cutting-off member operating in one direction only spring-loaded
-
- 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
- F16K31/00—Actuating devices; Operating means; Releasing devices
- F16K31/44—Mechanical actuating means
- F16K31/60—Handles
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Safety Valves (AREA)
Abstract
The invention discloses a kind of ship vent valve and air pressure balance methods, including valve body, the valve inner is provided with snorkel, the snorkel two sides of the bottom are provided with port, the ventilation pipe surface is provided with piston, the top land is provided with connecting rod, loose collar is provided at the top of the connecting rod, the top land and loose collar bottom are provided with spring, the piston base is provided with seal sleeve, the seal sleeve two sides of the bottom are provided with the first port, two sides are provided with the second port at the top of the seal sleeve, the body top is provided with the first valve deck.The present invention passes through piston and seal sleeve, piston is moved up and down by air pressure change, drive seal sleeve movement, it is connected to respectively with port using the first port or the second port, balance air pressure in cabin, it realizes the balance for only carrying out air pressure using a snorkel, facilitates the management of vent valve, improve the sealing effect of vent valve.
Description
Technical field
The present invention relates to ship equipment technical field, in particular to a kind of ship vent valve and air pressure balance method.
Background technique
High speed ventilation valve for ship is the special equipment of ship fire safety, mounted in each of oil carrier or chemical tanker
The top of a cargo tank, for discharge transported in freight house and storage process in the mistake high pressure that causes due to temperature change or too low
The phenomenon that explosion caused by pressure or container destroy；
A kind of ship high-speed ventilation valve that number of patent application is 201720079912.1 pushes piston to squeeze using hyperbar
The first spring is pressed, finally third through-hole is connected to first through hole in pressure limit, and high pressure in cabin is discharged；Atmospheric pressure passes through
First through hole, the second through-hole in sleeve pipes, steel ball are ejected, in this way, internal pressure can be balanced, avoids internal portion's pressure
Flat phenomenon is inhaled caused by too low, either high pressure or low pressure all has good protective effect；But air pressure in balance cabin
In the process, it needs using the through-holes being in communication with the outside multiple on valve body, the gas disengaging of vent valve is complex, affects ventilative
The management of valve, the sealing effect of vent valve also will receive influence.
Therefore, it invents a kind of ship vent valve and air pressure balance method is necessary to solve the above problems.
Summary of the invention
The purpose of the present invention is to provide a kind of ship vent valve and air pressure balance methods, pass through setting piston and sealing
Sleeve, piston are moved up and down by air pressure change, drive seal sleeve movement, using the first port or the second port respectively with port
Connection balances air pressure in cabin, realizes the balance for only carrying out air pressure using a snorkel, facilitates the management of vent valve, improves saturating
The sealing effect of air valve, to solve the problems mentioned in the above background technology.
To achieve the above object, the invention provides the following technical scheme: a kind of ship vent valve, including valve body, it is described
Valve inner is provided with snorkel, and the snorkel two sides of the bottom are provided with port, and the ventilation pipe surface is provided with piston,
The top land is provided with connecting rod, is provided with loose collar, the top land and loose collar bottom at the top of the connecting rod
It is provided with spring, the piston base is provided with seal sleeve, and the seal sleeve two sides of the bottom are provided with the first port,
Two sides are provided with the second port at the top of the seal sleeve, and the body top is provided with the first valve deck.
Preferably, the valve body side is provided with emergency airway, and described emergency airway one end is provided with the second valve deck, described
It is provided with push rod in the middle part of second valve deck, the push rod inner end is provided with seal disc, and the sealing panel surface side is provided with sealing
Pad, the gasket surface are provided with fixing threaded hole, and second valve cover surfaces are provided with port, and the through-hole is internally provided with
Clamping screw.
Preferably, it is provided with fixed frame at the top of second valve deck, described fixed frame one end is provided with operating stick, the behaviour
Make bar top surface and is provided with anti-skidding lasso.
Preferably, the snorkel and connecting rod run through body top, and the piston is flexibly connected with valve body, the work
Plug, loose collar, seal sleeve the first valve deck be socketed with snorkel, the spring and connecting rod are socketed, first port
Match with port with the second port.
Preferably, the push rod is flexibly connected with the second valve deck, and the fixing threaded hole is fixedly connected with seal disc, described solid
Determine screw hole to match with port, the clamping screw is threadedly coupled with fixing threaded hole.
Preferably, the operating stick is flexibly connected with fixed frame, and the operating stick and push rod outer end are hinged.
A kind of air pressure balance method of ship vent valve, further comprising the steps of including the ship vent valve:
S1: when air pressure is excessively high in cabin, hyperbar pushes piston to rise；
S2: the quill of the spring at the top of compression piston, piston base follows piston to rise；
S3: the first port of quill bottom is connected to port, and high pressure in cabin is discharged, and mitigates pressure in cabin；
S4: compressed spring makes piston reset, and seal sleeve follows reset, closes to port；
S5: when hypotony, ambient pressure pushes piston decline, pushes seal sleeve decline；
S6: the connecting rod of top land pulls loose collar decline, the spring of activity compression ring bottom；
S7: the second port at the top of seal sleeve is connected to port, and air is filled in cabin, balances internal pressure；
S8: compressed spring makes piston reset, and seal sleeve follows reset, closes to port, realizes air pressure
Balance.
Technical effect and advantage of the invention:
(1) present invention is by being arranged piston, and when air pressure is excessively high in cabin, hyperbar pushes piston to rise, at the top of compression piston
Spring, the quill of piston base follows piston to rise, and the first port of quill bottom is connected to port, will be in cabin
High pressure release, mitigates pressure in cabin, and makes piston reset by compressed spring, and seal sleeve follows reset, to port into
Row closing；When hypotony, ambient pressure pushes piston decline, pushes seal sleeve decline, and the connecting rod of top land is drawn
Dynamic loose collar declines, the spring of activity compression ring bottom, and the second port at the top of seal sleeve is connected to port, and air is filled with cabin
It is interior, internal pressure is balanced, and piston reset is made by compressed spring, seal sleeve follows reset, closes to port,
It is advantageously implemented the balance for only carrying out air pressure using a snorkel, facilitates the management of vent valve, improves the sealing effect of vent valve
Fruit；
(2) present invention is taken clamping screw from fixing threaded hole when vent valve is abnormal by the way that emergency airway is arranged
Under, operating stick is rotated, operating stick is rotated centered on fixed frame, and compounding practice bar and push rod are hinged, pushes push rod into valve body
Movement pushes seal disc using lever principle, and emergency airway is connected to through-hole, is balanced, be conducive to manually to air pressure in cabin
In vent valve failure, emergency operation is carried out to vent valve, improves the security performance of vent valve.
Detailed description of the invention
Fig. 1 is overall structure diagram of the invention；
Fig. 2 is whole schematic cross-sectional view of the invention；
Fig. 3 is the portion the A structural schematic diagram of Fig. 2 of the present invention；
Fig. 4 is the side structure schematic view of seal disc of the present invention；
In figure: 1 valve body, 2 snorkels, 3 ports, 4 pistons, 5 connecting rods, 6 loose collars, 7 springs, 8 seal sleeves, 9 first
Port, 10 second ports, 11 first valve decks, 12 emergency airways, 13 second valve decks, 14 push rods, 15 seal discs, 16 gaskets, 17
Fixing threaded hole, 18 through-holes, 19 clamping screws, 20 fixed frames, 21 operating sticks, 22 anti-skidding lassos.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
Embodiment 1
The present invention provides a kind of ship vent valve as shown in Figs 1-4, including valve body 1, it is arranged inside the valve body 1
There is snorkel 2, carries out gas and the circulation of gas out of my cabin in cabin using snorkel 2,2 two sides of the bottom of snorkel are provided with gas
Mouth 3,2 surface of snorkel is provided with piston 4, and connecting rod 5 is provided at the top of the piston 4, is arranged at the top of the connecting rod 5
There is loose collar 6,4 top of piston and 6 bottom of loose collar are provided with spring 7, and identical spring 7 facilitates the flat of piston 4
Weighing apparatus, 4 bottom of piston are provided with seal sleeve 8, and 8 two sides of the bottom of seal sleeve are provided with the first port 9, described close
8 top two sides of big envelope cylinder are provided with the second port 10, and the first valve deck 11 is provided at the top of the valve body 1.
Further, in the above-mentioned technical solutions, 1 side of valve body is provided with emergency airway 12, the emergency airway
12 one end are provided with the second valve deck 13, and push rod 14 is provided in the middle part of second valve deck 13, and 14 inner end of push rod is provided with close
Closing disk 15, the 15 surface side of seal disc are provided with gasket 16, and seal disc 15 is tight using gasket 16 and the second valve deck 13
Contiguity touching, realizes the sealing to through-hole 18,16 surface of gasket is provided with fixing threaded hole 17,13 surface of the second valve deck
It is provided with port 18, the through-hole 18 is internally provided with clamping screw 19；
Further, in the above-mentioned technical solutions, fixed frame 20, the fixed frame are provided at the top of second valve deck 13
20 one end are provided with operating stick 21, and 21 top surface of operating stick is provided with anti-skidding lasso 22, are easy to use operating stick 21；
Further, in the above-mentioned technical solutions, the snorkel 2 and connecting rod 5 are through 1 top of valve body, the work
Plug 4 is flexibly connected with valve body 1, and the piston 4, loose collar 6, seal sleeve 8 and the first valve deck 11 are socketed with snorkel 2, institute
It states spring 7 and connecting rod 5 is socketed, first port 9 and the second port 10 match with port 3, and piston 4 is by air pressure change
It moves up and down, drives seal sleeve 8 to move, be connected to respectively with port 3 using the first port 9 or the second port 10, balance in cabin
Air pressure is realized the balance for only being carried out air pressure using a snorkel 2, facilitates the management of vent valve, and the sealing effect of vent valve is improved
Fruit；
Further, in the above-mentioned technical solutions, the push rod 14 is flexibly connected with the second valve deck 13, the fixing threaded hole
17 are fixedly connected with seal disc 15, and the fixing threaded hole 17 matches with port 18, the clamping screw 19 and fixing threaded hole 17
It is threadedly coupled, clamping screw passes through port 18 and is threadedly coupled with fixing threaded hole 17, and seal disc 15 is fixed, and improves to urgent
The sealing of air flue 12；
Further, in the above-mentioned technical solutions, the operating stick 21 is flexibly connected with fixed frame 20, the operating stick 21
It is hinged with 14 outer end of push rod, operating stick is rotated, operating stick is rotated centered on fixed frame, and compounding practice bar is hinged with push rod, pushes away
Dynamic push rod is moved into valve body, using lever principle, pushes seal disc, emergency airway is connected to through-hole.
Working method of the present invention:
Referring to Figure of description 1-2, when air pressure is excessively high in cabin, hyperbar pushes piston 4 to rise, 4 top of compression piston
Spring 7, the quill 8 of 4 bottom of piston follow piston 4 to rise, and the first port 9 of 8 bottom of quill is connected to port 3,
High pressure in cabin is discharged, mitigates pressure in cabin, and reset piston 4 by compressed spring 7, seal sleeve 8 follows reset,
Port 3 is closed；When hypotony, ambient pressure pushes piston 4 to decline, and seal sleeve 8 is pushed to decline, and piston 4 pushes up
The connecting rod 5 in portion pulls loose collar 6 to decline, the spring 7 of 6 bottom of activity compression ring, second port 10 at 8 top of seal sleeve with
Port 3 is connected to, and air is filled in cabin, balances internal pressure, and reset piston 4 by compressed spring 7, seal sleeve 8
Reset is followed, port 3 is closed, the balance for only carrying out air pressure using a snorkel 2 is realized, facilitates the pipe of vent valve
Reason, improves the sealing effect of vent valve；
First clamping screw 19 is taken from fixing threaded hole 17 when vent valve is abnormal referring to Figure of description 1,3 and 4
Under, it is rotated further by operating stick 21, operating stick 21 is rotated centered on fixed frame 20, and compounding practice bar 21 and push rod 14 are hinged, is pushed
Push rod 14 is moved into valve body 1, using lever principle, pushes seal disc 15, emergency airway 12 is connected to through-hole 18, to gas in cabin
Pressure is balanced manually, is conducive in vent valve failure, is carried out emergency operation to vent valve, is improved the safety of vent valve
Energy.
Embodiment 2
A kind of air pressure balance method of ship vent valve, further comprising the steps of including the ship vent valve:
S1: when air pressure is excessively high in cabin, hyperbar pushes piston 4 to rise；
S2: the spring 7 at 4 top of compression piston, the quill 8 of 4 bottom of piston follow piston 4 to rise；
S3: the first port 9 of 8 bottom of quill is connected to port 3, and high pressure in cabin is discharged, and mitigates pressure in cabin；
S4: compressed spring 7 resets piston 4, and seal sleeve 8 follows reset, closes to port 3；
S5: when hypotony, ambient pressure pushes piston 4 to decline, and seal sleeve 8 is pushed to decline；
S6: the connecting rod 5 at 4 top of piston pulls loose collar 6 to decline, the spring 7 of 6 bottom of activity compression ring；
S7: second port 10 at 8 top of seal sleeve is connected to port 3, and air is filled in cabin, balances internal pressure；
S8: compressed spring 7 resets piston 4, and seal sleeve 8 follows reset, closes to port 3, realizes gas
The balance of pressure.
Finally, it should be noted that the foregoing is only a preferred embodiment of the present invention, it is not intended to restrict the invention,
Although the present invention is described in detail referring to the foregoing embodiments, for those skilled in the art, still may be used
To modify the technical solutions described in the foregoing embodiments or equivalent replacement of some of the technical features,
All within the spirits and principles of the present invention, any modification, equivalent replacement, improvement and so on should be included in of the invention
Within protection scope.
Claims (7)
1. a kind of ship vent valve, including valve body (1), it is characterised in that: the valve body (1) is internally provided with snorkel (2),
Snorkel (2) two sides of the bottom are provided with port (3), and snorkel (2) surface is provided with piston (4), the piston
(4) top is provided with connecting rod (5), is provided with loose collar (6) at the top of the connecting rod (5), at the top of the piston (4) and movable
Ring (6) bottom is provided with spring (7), and piston (4) bottom is provided with seal sleeve (8), seal sleeve (8) bottom
Two sides are provided with the first port (9), and two sides are provided with the second port (10), the valve body at the top of the seal sleeve (8)
(1) top is provided with the first valve deck (11).
2. a kind of ship vent valve according to claim 1, it is characterised in that: valve body (1) side is provided with tightly
Anxious air flue (12), described emergency airway (12) one end are provided with the second valve deck (13), are provided in the middle part of second valve deck (13)
Push rod (14), push rod (14) inner end are provided with seal disc (15), and seal disc (15) the surface side is provided with gasket
(16), gasket (16) surface is provided with fixing threaded hole (17), and the second valve deck (13) surface is provided with port (18),
The through-hole (18) is internally provided with clamping screw (19).
3. a kind of ship vent valve according to claim 2, it is characterised in that: setting at the top of second valve deck (13)
Have fixed frame (20), described fixed frame (20) one end is provided with operating stick (21), and operating stick (21) top surface is provided with
Anti-skidding lasso (22).
4. a kind of ship vent valve according to claim 1, it is characterised in that: the snorkel (2) and connecting rod (5)
At the top of valve body (1), the piston (4) is flexibly connected with valve body (1), the piston (4), loose collar (6), seal sleeve
(8) it is socketed with snorkel (2) with the first valve deck (11), the spring (7) and connecting rod (5) are socketed, first port (9)
Match with port (3) with the second port (10).
5. a kind of ship vent valve according to claim 2, it is characterised in that: the push rod (14) and the second valve deck
(13) it is flexibly connected, the fixing threaded hole (17) is fixedly connected with seal disc (15), the fixing threaded hole (17) and port (18)
Match, the clamping screw (19) is threadedly coupled with fixing threaded hole (17).
6. a kind of ship vent valve according to claim 3, it is characterised in that: the operating stick (21) and fixed frame
(20) it is flexibly connected, the operating stick (21) and push rod (14) outer end are hinged.
7. a kind of air pressure balance method of ship vent valve, it is characterised in that: including ship as described in claim 1 with thoroughly
Air valve, further comprising the steps of:
S1: when air pressure is excessively high in cabin, hyperbar pushes piston (4) to rise；
S2: the spring (7) at the top of compression piston (4), the quill (8) of piston (4) bottom follow piston (4) to rise；
S3: first port (9) of quill (8) bottom is connected to port (3), and high pressure in cabin is discharged, and mitigates pressure in cabin；
S4: compressed spring (7) resets piston (4), and seal sleeve (8) follows reset, closes to port (3)；
S5: when hypotony, ambient pressure pushes piston (4) decline, pushes seal sleeve (8) decline；
S6: the connecting rod (5) at the top of piston (4) pulls loose collar (6) decline, the spring (7) of activity compression ring (6) bottom；
S7: the second port (10) at the top of seal sleeve (8) is connected to port (3), and air is filled in cabin, balances internal pressure；
S8: compressed spring (7) resets piston (4), and seal sleeve (8) follows reset, closes to port (3), real
The balance of existing air pressure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811431857.3A CN109253292B (en) | 2018-11-28 | 2018-11-28 | Air-permeable valve for ship and air pressure balancing method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811431857.3A CN109253292B (en) | 2018-11-28 | 2018-11-28 | Air-permeable valve for ship and air pressure balancing method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109253292A true CN109253292A (en) | 2019-01-22 |
| CN109253292B CN109253292B (en) | 2023-11-03 |
Family
ID=65042780
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811431857.3A Active CN109253292B (en) | 2018-11-28 | 2018-11-28 | Air-permeable valve for ship and air pressure balancing method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109253292B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110320942A (en) * | 2019-05-31 | 2019-10-11 | 吉林省农业科学院 | Open type animal breath calorimetric device |
| CN113260180A (en) * | 2021-06-30 | 2021-08-13 | 深之蓝(天津)水下智能科技有限公司 | Underwater sealed cabin and underwater equipment with electronic element |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3916260A1 (en) * | 1989-05-19 | 1990-11-22 | Voss Richard Grubenausbau | Small pressure restricting valve with high rate of flow - has tubular sleeve forming valve piston containing interconnecting throttle bore |
| CN202338668U (en) * | 2011-11-30 | 2012-07-18 | 神华集团有限责任公司 | Self-reliance breather valve |
| CN207470863U (en) * | 2017-10-12 | 2018-06-08 | 四川德力铁道科技有限公司 | A kind of type of respiration valve |
| CN207554894U (en) * | 2017-12-04 | 2018-06-29 | 上海凯凡石化设备有限公司 | A kind of manhole fire-retardant breather valve |
| CN207729018U (en) * | 2018-01-04 | 2018-08-14 | 南通瑞达航海机械有限公司 | A kind of lock type ship high-speed ventilation valve |
| CN207921419U (en) * | 2018-03-05 | 2018-09-28 | 福托伟阀门(上海)有限公司 | A kind of breather valve |
| CN108709002A (en) * | 2018-07-30 | 2018-10-26 | 乐清市阀门厂 | A kind of high-speed ventilation valve |
-
2018
- 2018-11-28 CN CN201811431857.3A patent/CN109253292B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3916260A1 (en) * | 1989-05-19 | 1990-11-22 | Voss Richard Grubenausbau | Small pressure restricting valve with high rate of flow - has tubular sleeve forming valve piston containing interconnecting throttle bore |
| CN202338668U (en) * | 2011-11-30 | 2012-07-18 | 神华集团有限责任公司 | Self-reliance breather valve |
| CN207470863U (en) * | 2017-10-12 | 2018-06-08 | 四川德力铁道科技有限公司 | A kind of type of respiration valve |
| CN207554894U (en) * | 2017-12-04 | 2018-06-29 | 上海凯凡石化设备有限公司 | A kind of manhole fire-retardant breather valve |
| CN207729018U (en) * | 2018-01-04 | 2018-08-14 | 南通瑞达航海机械有限公司 | A kind of lock type ship high-speed ventilation valve |
| CN207921419U (en) * | 2018-03-05 | 2018-09-28 | 福托伟阀门(上海)有限公司 | A kind of breather valve |
| CN108709002A (en) * | 2018-07-30 | 2018-10-26 | 乐清市阀门厂 | A kind of high-speed ventilation valve |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110320942A (en) * | 2019-05-31 | 2019-10-11 | 吉林省农业科学院 | Open type animal breath calorimetric device |
| CN110320942B (en) * | 2019-05-31 | 2022-10-11 | 吉林省农业科学院 | Open-circuit animal breath heat measuring device |
| CN113260180A (en) * | 2021-06-30 | 2021-08-13 | 深之蓝(天津)水下智能科技有限公司 | Underwater sealed cabin and underwater equipment with electronic element |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109253292B (en) | 2023-11-03 |
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