CN104776262A - Automatic exhaust valve - Google Patents
Automatic exhaust valve Download PDFInfo
- Publication number
- CN104776262A CN104776262A CN201510231681.7A CN201510231681A CN104776262A CN 104776262 A CN104776262 A CN 104776262A CN 201510231681 A CN201510231681 A CN 201510231681A CN 104776262 A CN104776262 A CN 104776262A
- Authority
- CN
- China
- Prior art keywords
- guide rod
- bonnet
- spool
- via hole
- valve
- 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.)
- Granted
Links
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
- F16K31/00—Actuating devices; Operating means; Releasing devices
- F16K31/12—Actuating devices; Operating means; Releasing devices actuated by fluid
- F16K31/18—Actuating devices; Operating means; Releasing devices actuated by fluid actuated by a float
- F16K31/20—Actuating devices; Operating means; Releasing devices actuated by fluid actuated by a float actuating a lift valve
- F16K31/22—Actuating devices; Operating means; Releasing devices actuated by fluid actuated by a float actuating a lift valve with the float rigidly connected to the valve
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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
- F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
- F16K1/32—Details
- F16K1/34—Cutting-off parts, e.g. valve members, seats
- F16K1/36—Valve members
- F16K1/38—Valve members of conical shape
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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
- F16K27/00—Construction of housing; Use of materials therefor
- F16K27/02—Construction of housing; Use of materials therefor of lift valves
- F16K27/0254—Construction of housing; Use of materials therefor of lift valves with conical shaped valve members
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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
- F16K27/00—Construction of housing; Use of materials therefor
- F16K27/08—Guiding yokes for spindles; Means for closing housings; Dust caps, e.g. for tyre valves
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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
- F16K33/00—Floats for actuation of valves or other apparatus
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Self-Closing Valves And Venting Or Aerating Valves (AREA)
- Float Valves (AREA)
Abstract
The invention discloses an automatic exhaust valve. The automatic exhaust valve comprises an upper valve deck, a guide rod, a valve element, a floater and a valve body formed by connecting a support and a lower valve deck. A lower guide rod via hole is formed in the center of the lower valve deck. The support is provided with gas-liquid inlets. An upper guide rod via hole and exhaust ports are formed in the center of the upper portion of the upper valve deck, and a main exhaust hole is formed in the center of the lower portion of the upper valve deck. The valve element is of a circular cone frustum structure, the conical surface of the valve element can be matched with the main exhaust hole to form a main sealing surface. The center of the valve element is provided with an auxiliary exhaust hole with the aperture larger than the diameter of the guide rod. The guide rod penetrates through the upper guide rod via hole, the main exhaust hole, the auxiliary exhaust hole and the lower guide rod via hole. A conical boss is arranged in the middle of the guide rod. The valve element is located above the conical boss. The conical surface of the conical box can be matched with the auxiliary exhaust hole to form an auxiliary sealing surface. The floater is located below the conical boss and bonded to the guide rod in a penetrated and sleeving mode. The automatic exhaust valve can increase the exhaust rate, the valve element and the floater can conduct guiding reliably, and the phenomenon that the valve element and the floater get stuck is avoided.
Description
Technical field
the present invention relates to a kind of automatic control pressure vent.
Background technique
In much industry and civilian occasion, in order to get rid of container or ducted gas realizes gas-liquid separation or in order to drain clean ducted liquid and air inlet, automatic control pressure vent is adopted in a large number.But some automatic control pressure vent at present, though can realize initial stage high-flow air-exhaust and later stage primary exhaust flow function, valve mechanism is complicated, bulky; Some automatic control pressure vent adopts spool, float integral structure, it can only realize initial stage exhaust, once initial stage exhaust terminates, in tank or after manifold pressure rises to certain value, due in tank or the effect of manifold pressure, power is upwards made suffered by spool to be greater than the gravity of spool and float, when after the gas that reassembles in tank or in pipeline, valve can not move down and reopen, and causes degassing function to be lost.
CN202158201U discloses a kind of buffering exhaust valve, it comprises valve body and is placed in the valve gap above valve body, body base is provided with suction port, valve gap is provided with main vent, ball float is provided with in valve pocket, be provided with above the inherent ball float of valve pocket and can closed by lifting or open the buffering flap of main vent, on buffering flap has, lower two end faces, upper-end surface is provided with the sealing surface coordinated with main vent, the gap having air feed to flow through between buffering flap sidewall and valve interior wall, buffering flap have in communication, the second exhaust port can closed when lower end surface and ball float float.It can realize initial stage high-flow air-exhaust and later stage primary exhaust flow.But still there are the following problems: (1) ball float can be subject to head-on blowing of the air-flow entered from suction port, as long as airspeed reaches certain value, buffering flap will be closed, ball float also can close second exhaust port, a large amount of gas may be also had not discharge, exhaust effect is bad, and can not realize Quick air-discharge; (2) cushion flap and rely on guide rod guiding, the guide rod on buffering flap and guide sleeve only have single point supporting, and guide effect is poor, may occur clamping stagnation; Ball float relies on the guiding rib guiding of valve interior wall, and difficulty of processing is large; (3) the top floating ball float surface of second exhaust port forms sealing surface, and ball float processing request is high, otherwise the problem easily causing sealing (closedown) not tight.
Summary of the invention
The object of this invention is to provide the simple automatic control pressure vent of a kind of structure, with under the condition realizing initial stage high-flow air-exhaust and later stage primary exhaust flow, accelerate deflation rate, make spool and floater guiding reliably simultaneously, avoid occurring catching phenomenon.
Automatic control pressure vent of the present invention, the valve body comprising bonnet, guide rod, spool, float and connected and composed by support and bottom flange, described bonnet is arranged on above valve body, and described spool and float are positioned at the valve pocket that valve body is formed.The center of described bottom flange offers lower guide rod via hole, and described support is provided with gas-liquid import.The central upper portion of described bonnet offers guide rod via hole, and the top of bonnet offers the relief opening be positioned at around guide rod via hole, and the lower central of bonnet offers the main exhaust hole that relief opening can be communicated with valve pocket.Described spool is circular cone structure, and its conical surface can coordinate with main exhaust hole and forms primary sealing area, and the center of spool offers the auxiliary exhaust ports that aperture is greater than the diameter of described guide rod, and relief opening can be communicated with valve pocket by this auxiliary exhaust ports.Described guide rod is through upper guide rod via hole, main exhaust hole, auxiliary exhaust ports and lower guide rod via hole and one end is stretched out outside bonnet, and the other end stretches out outside bottom flange, and the gap formed between guide rod and auxiliary exhaust ports forms auxiliary exhaust passages; The middle part of described guide rod has conical boss, spool is positioned at above conical boss, and the conical surface of this conical boss can coordinate with described auxiliary exhaust ports and forms auxiliary seal face, float to be positioned at below conical boss and to wear and on the guide bar bonding, and float can drive the relative bonnet of guide rod, spool and bottom flange to move up and down.
Described support is arranged by the many columns be circumferentially evenly arranged and forms, and described gas-liquid import is the interval formed between adjacent two root posts.
Described support also can be cylinder, and described gas-liquid import is be opened in the via hole on this cylinder wall.
Described spool is made up of steel core and the rubber sleeve be coated on outside steel core; Spool also directly can be processed by teflon.
Described float is hollow ball structure or solid cylinder body structure.
Described bottom flange is circular dull and stereotyped or square plate, and it offers the bottom flange mounting hole be connected with described support.
Described relief opening be three along equally distributed fan looping pit around described guide rod via hole; Described bonnet circumferentially evenly offers six bonnet mounting holes.The mounting flange that bonnet can be used as automatic control pressure vent is connected with pipeline or liquid container.
Its working principle is as follows:
When there is no liquid in pipeline (or liquid container), float and spool are all in bottom, the conical surface of the conical boss of guide rod coordinates with the auxiliary exhaust ports of spool and forms auxiliary seal face, float is supported on bottom flange, gas-liquid import, valve pocket, main exhaust hole, relief opening are communicated with, and carry out initial stage high-flow air-exhaust; Along with the carrying out of exhaust, liquid enters from gas-liquid import, when gas is by time drained, liquid level makes float floating band movable valve plug and guide rod move upward, the conical surface of spool coordinates with the wall in main exhaust hole and forms primary sealing area, closes main exhaust hole, stops high-flow air-exhaust.When after main exhaust bore closure, along with liquid (or gas-liquid mixture) continues to enter, pipeline (or liquid container) internal pressure rises, and due to differential pressure action, continues to maintain closed condition; When occurring in pipeline (or liquid container) that bubble coalescence makes liquid level decline in pipeline (or liquid container), float and guide rod can be followed liquid level and be moved down, and spool still remained original and the state of the wall fitted seal in main exhaust hole because of differential pressure action (pressure that namely gas acts on spool is greater than the gravity of spool), guide rod moves down and the conical surface of its conical boss is departed from and the coordinating of auxiliary exhaust ports, gas-liquid import, valve pocket, auxiliary exhaust ports, relief opening are communicated with, and start primary exhaust flow.This process can along with the accumulation of pipeline (or liquid container) interior gas, eliminating and constantly repeating, to ensure in pipeline (or liquid container) without more gas accumulation.Needing manually opened when carrying out primary exhaust flow, being positioned at part outside bonnet to pressing down guide rod.
When the air pressure in pipeline (or liquid container) is lower than ambient pressure, spool moves down opens main exhaust gas inlet hole automatically.
The present invention compared with prior art, has following effect:
(1) the gas-liquid import of valve pocket is located on support, and float and spool, by the obstruct of bottom flange, can not be blown by air-flow, only have gas to be about to drain, just close exhaust when liquid makes float, guide rod and spool rise, can not misoperation be produced, good exhaust effect, and can Quick air-discharge be realized.
(2) spool and float are all led by guide rod, and guide rod, through bonnet and bottom flange, is two dot point, and guiding is reliable, not easily clamping stagnation, and guide rod structure is simple, easy processing.
(3) conical surface of the conical boss in the middle part of guide rod coordinates with auxiliary exhaust ports and forms auxiliary seal face, easy processing, and good sealing effect.
(4) being positioned at part outside bonnet by pressing down guide rod, achieving the function of manually opened primary exhaust flow.
Accompanying drawing explanation
Fig. 1 is the structural representation of the automatic control pressure vent of embodiment 1.
Fig. 2 is the structural representation of the bonnet of embodiment 1.
Fig. 3 is the worm's eye view of the support of embodiment 1.
Fig. 4 is the structural representation of the bottom flange of embodiment 1.
Fig. 5 is the structural representation that in embodiment 1, automatic control pressure vent is in closed condition.
Fig. 6 is the schematic diagram that in embodiment 1, automatic control pressure vent carries out primary exhaust flow.
Fig. 7 is the view that the automatic control pressure vent of embodiment 1 is arranged on pipeline.
Fig. 8 is the structural representation of the spool of embodiment 2.
Embodiment
Below in conjunction with accompanying drawing, the present invention is elaborated.
embodiment 1:automatic control pressure vent as shown in Figures 1 to 7, the valve body comprising bonnet 1, guide rod 2, spool 3, float 5 and connected and composed by support 4 and bottom flange 6, bonnet 1 is welded on above valve body, spool 3 and float 5 are positioned at the valve pocket 7 that valve body is formed, and float 5 is solid cylinder body structure (also can be hollow ball structure).
Support 4 is cylinder, this cylinder wall offers the gas-liquid import of via hole 41 as valve body, and the lower end surface of this cylinder offers four connecting screw holes 42.
Bottom flange 6 is circular dull and stereotyped, and the center of bottom flange 6 offers lower guide rod via hole 61, evenly offers four around and coordinates and the bottom flange mounting hole 62 be connected by screw with four connecting screw holes 42 of support 4.
The central upper portion of bonnet 1 offers guide rod via hole 11, the top of bonnet 1 offer three around guide rod via hole 11 equally distributed fan looping pit as relief opening 12, the lower central of bonnet 1 offers the main exhaust hole 13 that relief opening 12 can be communicated with valve pocket 7, and bonnet 1 circumferentially evenly offers six bonnet mounting holes 14 be connected with pipeline 8.
Spool 3 is circular cone structure, and spool 3 is directly processed by teflon.The conical surface of spool 3 can coordinate with main exhaust hole 13 and forms primary sealing area, and the center of spool 3 offers the auxiliary exhaust ports 31 that aperture is greater than the diameter of guide rod 2, and relief opening 12 can be communicated with valve pocket 7 by this auxiliary exhaust ports.
Guide rod 2 is through upper guide rod via hole 11, main exhaust hole 13, auxiliary exhaust ports 31 and lower guide rod via hole 61 and one end is stretched out outside bonnet 1, the other end stretches out outside bottom flange 6, and the gap formed between guide rod 2 and auxiliary exhaust ports 31 forms auxiliary exhaust passages; The middle part of guide rod 2 has conical boss 21, spool 3 is positioned at above conical boss 21, and the conical surface of this conical boss 21 can coordinate with auxiliary exhaust ports 31 and forms auxiliary seal face, float 5 to be positioned at below conical boss 21 and to wear and be bonded on guide rod 2, and float 5 can drive guide rod 2, and bonnet 1, spool 3 and bottom flange 6 move up and down relatively.
Adopt bolt the bonnet mounting hole of six on bonnet 1 14 and six pipeline attachment holes 81 on pipeline 8 to be connected respectively, thus realize the installation of above-mentioned automatic control pressure vent on pipeline 8.
Its working principle is as follows: when not having liquid in pipeline 8, float 5 and spool 3 are all in bottom, the conical surface of the conical boss 21 of guide rod 2 coordinates with the auxiliary exhaust ports 31 of spool 3 and forms auxiliary seal face, float 5 is supported on bottom flange 6, gas-liquid import (i.e. via hole 41), valve pocket 7, main exhaust hole 13, relief opening 12 are communicated with, and carry out initial stage high-flow air-exhaust; Along with the carrying out of exhaust, liquid enters from gas-liquid import, when gas is by time drained, liquid level makes float 5 floating band movable valve plug 3 and guide rod 2 move upward, the conical surface of spool 3 coordinates with the wall in main exhaust hole 13 and forms primary sealing area, closes main exhaust hole 13, stops high-flow air-exhaust.After main exhaust hole 13 is closed, along with liquid (or gas-liquid mixture) continues to enter, pipeline 8 internal pressure rises, and due to differential pressure action, continues to maintain closed condition; When occurring in pipeline 8 that bubble coalescence makes liquid level decline in pipeline, float 5 and guide rod 2 can be followed liquid level and be moved down, and spool 3 still remained original and the state of the wall fitted seal in main exhaust hole 13 because of differential pressure action (pressure that namely gas acts on spool is greater than the gravity of spool), guide rod 2 moves down the conical surface disengaging of the conical boss 21 made and coordinating of auxiliary exhaust ports 31, gas-liquid import (i.e. via hole 41), valve pocket 7, auxiliary exhaust ports 31, relief opening 12 are communicated with, and start primary exhaust flow.This process can along with the accumulation of gas in pipelines, eliminating and constantly repeating, to ensure in pipeline without more gas accumulation.Needing manually opened when carrying out primary exhaust flow, being positioned at part outside bonnet 1 to pressing down guide rod 2.
When the air pressure in pipeline is lower than ambient pressure, spool 3 moves down opens main exhaust hole 13 air inlet automatically.
embodiment 2:the structure of its automatic control pressure vent is identical with the structure major part of automatic control pressure vent in embodiment 1, and difference is: spool 3 is made up of (see Fig. 8) steel core 32 and the rubber sleeve 33 be coated on outside steel core 32; Support 4 is arranged by four columns be circumferentially evenly arranged and forms, and gas-liquid import is the interval formed between adjacent two root posts; Bottom flange 6 is square plate.The working principle of its automatic control pressure vent is identical with the working principle of automatic control pressure vent in embodiment 1.
Claims (7)
1. an automatic control pressure vent, the valve body comprising bonnet (1), guide rod (2), spool (3), float (5) and connected and composed by support (4) and bottom flange (6), described bonnet (1) is arranged on above valve body, and described spool (3) and float (5) are positioned at the valve pocket (7) that valve body is formed; It is characterized in that:
The center of described bottom flange (6) offers lower guide rod via hole (61), and described support (4) is provided with gas-liquid import;
The central upper portion of described bonnet (1) offers guide rod via hole (11), the top of bonnet offers the relief opening (12) be positioned at around guide rod via hole, and the lower central of bonnet offers the main exhaust hole (13) that relief opening (12) can be communicated with valve pocket (7);
Described spool (3) is circular cone structure, its conical surface can coordinate with main exhaust hole (13) and forms primary sealing area, the center of spool offers the auxiliary exhaust ports (31) that aperture is greater than the diameter of described guide rod (2), and relief opening (12) can be communicated with valve pocket (7) by this auxiliary exhaust ports;
Described guide rod (2) is through upper guide rod via hole (11), main exhaust hole (13), auxiliary exhaust ports (31) and lower guide rod via hole (61) and one end is stretched out outside bonnet (1), and the other end stretches out outside bottom flange (6); The middle part of described guide rod (2) has conical boss (21), spool (3) is positioned at conical boss (21) top, and the conical surface of this conical boss can coordinate with described auxiliary exhaust ports (31) and forms auxiliary seal face, float (5) is positioned at conical boss (21) below and wears and be bonded on guide rod (2), and float (5) can drive guide rod (2), and bonnet (1), spool (3) and bottom flange (6) move up and down relatively.
2. automatic control pressure vent according to claim 1, is characterized in that: described support (4) is arranged by the many columns be circumferentially evenly arranged and forms, and described gas-liquid import is the interval formed between adjacent two root posts.
3. automatic control pressure vent according to claim 1, is characterized in that: described support (4) is cylinder, and described gas-liquid import is the via hole (41) be opened on this cylinder wall.
4. automatic control pressure vent according to claim 1, is characterized in that: described spool (3) is made up of steel core (32) and the rubber sleeve (33) be coated on outside steel core.
5. the automatic control pressure vent according to claim 1 or 2 or 3 or 4, is characterized in that: described float (5) is hollow ball structure or solid cylinder body structure.
6. automatic control pressure vent according to claim 5, is characterized in that: described bottom flange (6) is circular dull and stereotyped or square plate, and it offers the bottom flange mounting hole (62) be connected with described support (4).
7. automatic control pressure vent according to claim 6, is characterized in that: described relief opening (12) be three along described guide rod via hole (11) equally distributed fan looping pit around; Described bonnet (1) circumferentially evenly offers six bonnet mounting holes (14).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510231681.7A CN104776262B (en) | 2015-05-08 | 2015-05-08 | Automatic exhaust valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510231681.7A CN104776262B (en) | 2015-05-08 | 2015-05-08 | Automatic exhaust valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104776262A true CN104776262A (en) | 2015-07-15 |
| CN104776262B CN104776262B (en) | 2017-02-01 |
Family
ID=53617906
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510231681.7A Active CN104776262B (en) | 2015-05-08 | 2015-05-08 | Automatic exhaust valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104776262B (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105114656A (en) * | 2015-08-17 | 2015-12-02 | 平原机器厂（新乡） | Exhaust valve and piston thereof |
| CN106051287A (en) * | 2016-05-27 | 2016-10-26 | 中国工程物理研究院化工材料研究所 | Float-type gas inlet and outlet device in upper end cover of working container of isostatic pressing machine |
| CN107869606A (en) * | 2017-12-05 | 2018-04-03 | 博纳斯威阀门股份有限公司 | A kind of micro-exhaust valve for carrying filtering function |
| CN108561617A (en) * | 2018-05-23 | 2018-09-21 | 青岛双瑞海洋环境工程股份有限公司 | The float-type steam-water separation valve for the failure phenomenon that builds the pressure can be overcome |
| CN110043672A (en) * | 2019-04-16 | 2019-07-23 | 海洋石油工程股份有限公司 | Hand pulling type vent valve |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4209032A (en) * | 1978-05-22 | 1980-06-24 | Mordeki Drori | Air-relief valves |
| CN87210480U (en) * | 1987-08-24 | 1988-05-25 | 缪平溪 | Composite exhausting valve with double outlet |
| US5595210A (en) * | 1993-09-30 | 1997-01-21 | Smc Corporation | Auto-drain unit |
| JP2001132862A (en) * | 1999-11-08 | 2001-05-18 | Asahi Organic Chem Ind Co Ltd | Air valve |
| CN2806908Y (en) * | 2005-07-19 | 2006-08-16 | 刘阳 | Core of quick exhaust valve |
| CN2809354Y (en) * | 2005-01-17 | 2006-08-23 | 贺传政 | Automatic exhaust valve with variable submerged weight and double gas passages |
| CN202158201U (en) * | 2011-07-22 | 2012-03-07 | 安徽铜都阀门股份有限公司 | Buffering exhaust valve |
| CN204692721U (en) * | 2015-05-08 | 2015-10-07 | 中国人民解放军后勤工程学院 | Embedded automatic control pressure vent |
-
2015
- 2015-05-08 CN CN201510231681.7A patent/CN104776262B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4209032A (en) * | 1978-05-22 | 1980-06-24 | Mordeki Drori | Air-relief valves |
| CN87210480U (en) * | 1987-08-24 | 1988-05-25 | 缪平溪 | Composite exhausting valve with double outlet |
| US5595210A (en) * | 1993-09-30 | 1997-01-21 | Smc Corporation | Auto-drain unit |
| JP2001132862A (en) * | 1999-11-08 | 2001-05-18 | Asahi Organic Chem Ind Co Ltd | Air valve |
| CN2809354Y (en) * | 2005-01-17 | 2006-08-23 | 贺传政 | Automatic exhaust valve with variable submerged weight and double gas passages |
| CN2806908Y (en) * | 2005-07-19 | 2006-08-16 | 刘阳 | Core of quick exhaust valve |
| CN202158201U (en) * | 2011-07-22 | 2012-03-07 | 安徽铜都阀门股份有限公司 | Buffering exhaust valve |
| CN204692721U (en) * | 2015-05-08 | 2015-10-07 | 中国人民解放军后勤工程学院 | Embedded automatic control pressure vent |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105114656A (en) * | 2015-08-17 | 2015-12-02 | 平原机器厂（新乡） | Exhaust valve and piston thereof |
| CN106051287A (en) * | 2016-05-27 | 2016-10-26 | 中国工程物理研究院化工材料研究所 | Float-type gas inlet and outlet device in upper end cover of working container of isostatic pressing machine |
| CN106051287B (en) * | 2016-05-27 | 2018-02-06 | 中国工程物理研究院化工材料研究所 | A kind of isostatic pressing machine Work container upper end cover float-type air inlet-and-exhaust device |
| CN107869606A (en) * | 2017-12-05 | 2018-04-03 | 博纳斯威阀门股份有限公司 | A kind of micro-exhaust valve for carrying filtering function |
| CN108561617A (en) * | 2018-05-23 | 2018-09-21 | 青岛双瑞海洋环境工程股份有限公司 | The float-type steam-water separation valve for the failure phenomenon that builds the pressure can be overcome |
| CN110043672A (en) * | 2019-04-16 | 2019-07-23 | 海洋石油工程股份有限公司 | Hand pulling type vent valve |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104776262B (en) | 2017-02-01 |
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