CN108331939B - Driving pipe pressure type explosion-proof valve - Google Patents
Driving pipe pressure type explosion-proof valve Download PDFInfo
- Publication number
- CN108331939B CN108331939B CN201810299336.0A CN201810299336A CN108331939B CN 108331939 B CN108331939 B CN 108331939B CN 201810299336 A CN201810299336 A CN 201810299336A CN 108331939 B CN108331939 B CN 108331939B
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- valve
- air
- electromagnetic valve
- air inlet
- air cavity
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- 238000001514 detection method Methods 0.000 claims abstract description 9
- 238000007599 discharging Methods 0.000 claims abstract description 4
- 230000003014 reinforcing effect Effects 0.000 claims description 5
- 230000001502 supplementing effect Effects 0.000 claims description 2
- 230000004044 response Effects 0.000 abstract description 11
- 230000000149 penetrating effect Effects 0.000 abstract description 2
- 238000004880 explosion Methods 0.000 description 19
- 239000000428 dust Substances 0.000 description 12
- 230000000694 effects Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 238000003860 storage Methods 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 2
- 238000002955 isolation Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 230000035939 shock Effects 0.000 description 2
- 230000001629 suppression Effects 0.000 description 2
- 238000005520 cutting process Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000002360 explosive Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 238000003892 spreading Methods 0.000 description 1
- 230000007480 spreading Effects 0.000 description 1
- 238000011144 upstream manufacturing 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
- F16K7/00—Diaphragm valves or cut-off apparatus, e.g. with a member deformed, but not moved bodily, to close the passage ; Pinch valves
- F16K7/02—Diaphragm valves or cut-off apparatus, e.g. with a member deformed, but not moved bodily, to close the passage ; Pinch valves with tubular diaphragm
- F16K7/04—Diaphragm valves or cut-off apparatus, e.g. with a member deformed, but not moved bodily, to close the passage ; Pinch valves with tubular diaphragm constrictable by external radial force
- F16K7/07—Diaphragm valves or cut-off apparatus, e.g. with a member deformed, but not moved bodily, to close the passage ; Pinch valves with tubular diaphragm constrictable by external radial force by means of fluid pressure
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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
- F16K27/0236—Diaphragm cut-off apparatus
-
- 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
- F16K27/10—Welded housings
- F16K27/102—Welded housings for lift-valves
-
- 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
- F16K31/42—Actuating devices; Operating means; Releasing devices actuated by fluid by means of electrically-actuated members in the supply or discharge conduits of the fluid motor
Abstract
The invention provides a driving pipe pressure type explosion-proof valve, which comprises a valve shell, a valve inner shell and a rubber pipe, wherein the valve shell is fixed outside the valve inner shell, a sealed first air cavity is formed between the valve shell and the valve inner shell, the rubber pipe is coaxially arranged in the valve inner shell in a penetrating way, the end parts of the valve inner shell and the rubber pipe are fixedly connected, a sealed second air cavity is formed between the rubber pipe and the valve inner shell, and a medium channel is formed in the rubber pipe; the first air inlet electromagnetic valve is used for supplying air to the first air cavity, the air inlet of the second air inlet electromagnetic valve is positioned in the first air cavity, the air outlet of the second air inlet electromagnetic valve is communicated with the second air cavity, and the air outlet electromagnetic valve is communicated with the second air cavity and is used for discharging air from the second air cavity; the valve shell is also provided with a pressure detection component for measuring the pressure in the first air cavity, and the first air inlet electromagnetic valve, the second air inlet electromagnetic valve, the air outlet electromagnetic valve and the pressure detection component are all connected with the controller. The invention has simple structure and reduces the closing response time.
Description
Technical Field
The invention relates to the field of explosion-proof equipment, in particular to a main pipe pressure type explosion-proof valve.
Background
With the development of modern industry, the potential risk of dust explosion increases greatly. In actual production, only the explosion-proof plate is used for explosion relief, explosion isolation is not performed, and flames and pressure waves generated by explosion are transmitted to other connected devices through the connected pipelines, so that secondary or even larger power explosion is generated. The explosion-proof technology can prevent explosion from spreading from an initial position to other process units, and avoid secondary explosion or system explosion accidents, thereby reducing explosion disasters. The dust explosion isolation valve is used as a passive device original for occasions which are easy to cause dust explosion.
In particular, in a dust removing system of explosive dust, when the dust of a dust remover explodes, flames and shock waves generated by the explosion are transmitted to other areas along a pipeline, and secondary explosion of the dust is likely to occur in the other areas, so that a valve capable of rapidly reacting and isolating the transmission of the flames and the shock waves is very necessary to be arranged in the middle of the pipeline.
Chinese patent 201621443591.0 discloses a dust backpressure explosion-proof valve, including the valve body, the valve clack, integrative fixed mounting slope terminal surface in the valve body, valve clack and valve clack rocker fixed connection, valve clack rocker upper end fixed mounting has the locating shaft, slope terminal surface one side fixed mounting has the limiting plate, the locating shaft is connected with the transmission device who installs outside the valve body, valve gap and valve body fixed connection, install sealing gasket with the contact department of valve body on the valve gap, explosion or explosion take place in the export side of explosion-proof valve, because of the backpressure increases, the air current flows in opposite directions, make the backpressure valve clack close, the pressure wave that explosion produced can make the valve clack close on the slope terminal surface of entry side, thereby prevent explosion propagation to upstream pipeline and equipment, play the effect of keeping apart, but its response speed is difficult to satisfy the user demand.
Therefore, a pipe pressure type explosion-proof valve with simple structure and quick closing response is needed.
Disclosure of Invention
In view of the above drawbacks of the prior art, the present invention is directed to providing a main pipe pressure type explosion-proof valve, which is used for solving the problems of complex valve body structure and slow closing response in the prior art.
In order to achieve the above and other related objects, the invention provides a driving pipe pressure type explosion-proof valve, which comprises a valve shell, a valve inner shell and a rubber pipe, wherein the valve shell is fixed outside the valve inner shell and forms a sealed first air cavity between the valve inner shell and the valve inner shell; the first air inlet electromagnetic valve is communicated with the first air cavity and is used for supplying air to the first air cavity, the air inlet of the second air inlet electromagnetic valve is positioned in the first air cavity, the air outlet of the second air inlet electromagnetic valve is communicated with the second air cavity, and the air outlet electromagnetic valve is communicated with the second air cavity and is used for discharging air from the second air cavity; and the valve shell is also provided with a pressure detection component for measuring the pressure in the first air cavity, and the first air inlet electromagnetic valve, the second air inlet electromagnetic valve, the air release electromagnetic valve and the pressure detection component are all connected with the controller.
Preferably, a flange is arranged at the end part of the valve inner shell, and the end part of the rubber tube is fastened between the flange and the external flange.
Preferably, the wall thickness of the two ends of the rubber tube is larger than the wall thickness of the middle part of the rubber tube.
Preferably, the gap between the middle of the rubber tube and the valve inner shell is larger than the gap between the two ends of the rubber tube and the two ends of the valve inner shell.
Preferably, the first air inlet electromagnetic valve, the second air inlet electromagnetic valve and the air discharge electromagnetic valve are all pilot electromagnetic valves.
Preferably, the valve housing is welded to the valve inner housing.
Preferably, a plurality of axially extending reinforcing ribs are circumferentially distributed on the rubber tube.
Preferably, the first air inlet electromagnetic valve, the second air inlet electromagnetic valve and the air discharge electromagnetic valve are all connected with a remote controller.
As described above, the pneumatic pinch valve of the present invention has the following advantageous effects: the valve housing and the valve inner housing are adopted to enclose a sealed first air cavity, so that the first air cavity is used as an air inlet air source storage position of the second air cavity, and air can rapidly enter the second air cavity through the second air inlet electromagnetic valve to finish closing of the pneumatic pipe clamp valve, thereby reducing closing response time; in addition, the rubber tube and the two ends of the valve inner shell are fixed, and the valve shell is fixed outside the valve inner shell, so that the whole valve body is simple in structure and easy to produce, and the valve inner shell and the rubber tube which are coaxially arranged can be designed with the caliber according to the requirements, and can be suitable for opening and closing small-caliber pipelines and also suitable for large-caliber pipelines such as DN1000 pipelines.
Drawings
Fig. 1 shows a front view of the main pipe pressure type explosion-proof valve of the present invention.
Fig. 2 shows a top view of the active tube pressure type flameproof valve of the present invention.
Fig. 3 shows a cross-sectional view of the main pipe pressure type explosion suppression valve of the present invention.
Fig. 4 is a schematic diagram showing a state when the main pipe pressure type explosion-proof valve of the present invention is closed.
Fig. 5 shows a schematic view of a valve housing and a valve inner housing of a main pipe pressure type explosion-proof valve of the present invention.
Description of element reference numerals
1. Dust cover
2. Valve casing
3. Flange plate
4. Rubber tube
5. External flange plate
6. Air release electromagnetic valve
7. Blow-down valve
8. First air inlet electromagnetic valve
9. Pressure switch
10. Pressure gauge
11. Second air inlet electromagnetic valve
12. Valve inner shell
100. First air cavity
200. Second air cavity
300. Mounting hole
Detailed Description
Further advantages and effects of the present invention will become apparent to those skilled in the art from the disclosure of the present invention, which is described by the following specific examples.
Please refer to fig. 1 to 5. It should be understood that the structures, proportions, sizes, etc. shown in the drawings are for the purpose of understanding and reading the disclosure, and are not intended to limit the scope of the invention, which is defined by the appended claims, but rather by the claims, unless otherwise indicated, and unless otherwise indicated, all changes in structure, proportions, or otherwise, used by those skilled in the art, are included in the spirit and scope of the invention. Also, the terms such as "upper," "lower," "left," "right," "middle," and "a" and the like recited in the present specification are merely for descriptive purposes and are not intended to limit the scope of the invention, but are intended to provide relative positional changes or modifications without materially altering the technical context in which the invention may be practiced.
As shown in fig. 1, 2 and 3, the invention provides a quick-closing active pipe pressure type explosion-proof valve, which comprises a valve casing 2, a valve inner casing 12 and a rubber pipe 4, wherein the valve casing 12 is fixed outside the valve inner casing 4 and forms a sealed first air cavity 100 between the valve inner casing and the valve inner casing, the rubber pipe 4 is coaxially arranged in the valve inner casing 12 in a penetrating way, the end parts of the two are fixedly connected, a sealed second air cavity 200 is formed between the rubber pipe 4 and the valve inner casing 12, and a medium channel is arranged in the rubber pipe 4; the first air inlet electromagnetic valve 8, the second air inlet electromagnetic valve 11 and the air discharge electromagnetic valve 6 are arranged on the valve shell 2, the first air inlet electromagnetic valve 8 is communicated with the first air cavity 100 and is used for supplying air to the first air cavity 100, an air inlet of the second air inlet electromagnetic valve 11 is positioned in the first air cavity 100, an air outlet of the second air inlet electromagnetic valve 11 is communicated with the second air cavity 200, and the air discharge electromagnetic valve 6 is communicated with the second air cavity and is used for discharging air from the second air cavity; the valve housing 2 is further provided with a pressure detection component for measuring the pressure in the first air cavity 100, and the first air inlet electromagnetic valve 8, the second air inlet electromagnetic valve 11, the air outlet electromagnetic valve 6 and the pressure detection component are connected with a controller through signals, and the controller in the embodiment can be a remote controller or a controller arranged on the drive pipe pressure type explosion-proof valve. The valve housing 2 and the valve inner housing 12 are adopted to enclose the sealed first air cavity 100, so that the first air cavity 100 is used as an air inlet air source storage position of the second air cavity 200, and air can rapidly enter the second air cavity 200 through the second air inlet electromagnetic valve 11 to finish closing of the pneumatic pipe clamp valve, thereby reducing closing response time; in addition, the rubber tube 4 and the valve inner shell 12 are fixed at two ends and the valve shell 2 is fixed outside the valve inner shell 12, so that the whole valve body is simple in structure and easy to produce, and the coaxially arranged valve inner shell and rubber tube can be designed with calibers according to requirements, and can be suitable for opening and closing small-caliber pipelines and also suitable for large-caliber pipelines such as DN1000 pipelines.
For the convenience of manufacturing, as shown in fig. 5, the valve housing 2 and the valve inner housing 12 in this embodiment are manufactured separately, and the valve housing 2 is welded to the outer wall of the valve inner housing 12 in such a manner that the sealing performance of the first air chamber 100 is enhanced. The valve housing and the valve inner housing are provided with mounting holes 300, and the mounting holes 300 are used for mounting the first air inlet electromagnetic valve 8, the second air inlet electromagnetic valve 11 or the air outlet electromagnetic valve 6. The number of the first air inlet electromagnetic valve 8, the second air inlet electromagnetic valve 11 and the air outlet electromagnetic valve 6 can be set according to the requirement, and in order to further reduce the closing response time, the number of the second air inlet electromagnetic valves 11 can be multiple, and the circumferential arrangement of the valve inner shell 12 can be looped; the closing response time can also be reduced by selecting a second intake solenoid valve 11 of large air volume; the number of the bleed solenoid valves 6 may be plural in order to accelerate the opening response of the pipe pressure type explosion suppression valve.
The end of the valve inner shell 12 in this embodiment is welded with a flange 3, the end of the rubber tube 4 is fastened between the flange 3 and the external flange 5, the rubber tube 4 and the valve inner shell 12 are convenient to install, and the tightness of the second air cavity 200 is ensured by the fixation of the flange.
In order to improve the service life of the pipe pressure type explosion-proof valve, in the embodiment, the wall thickness of the two ends of the rubber pipe 4 is larger than the wall thickness of the middle part of the rubber pipe, when the pneumatic pipe clamp valve is in normal use, a medium in a pipeline enters a medium channel surrounded by the rubber pipe 4, and when the pneumatic pipe clamp valve is required to be closed, the medium can impact the two ends of the rubber pipe 4 in the closing process, so that the two ends of the rubber pipe are thicker, the wear resistance of the rubber pipe is increased, and the service life of the rubber pipe is prolonged.
In this embodiment, the gap between the middle of the rubber tube 4 and the valve inner shell 12 is larger than the gap between the two ends of the rubber tube and the two ends of the valve inner shell, that is, the second air cavity 200 mainly exists in the middle section of the rubber tube and the valve inner shell, and the gap between the rubber tube and the valve inner shell can ensure the high efficiency and stability of the airflow during air intake.
In this embodiment, a plurality of axially extending reinforcing ribs are circumferentially distributed on the rubber tube 4, and the reinforcing ribs are along the length direction of the rubber tube, so that when the pneumatic tube pinch valve is closed, the number of deformed flaps of the rubber tube is determined by the number of the reinforcing ribs, and the closing response time can be reduced. The number of flaps of the hose deformed is also affected by the number of the second intake solenoid valves 11 and the intake flow rate thereof.
In order to facilitate the quick closing of the pipe pressure type explosion-proof valve, the first air inlet electromagnetic valve 8, the second air inlet electromagnetic valve 11 and the air outlet electromagnetic valve 6 are all pilot type electromagnetic valves in the embodiment. The pressure detection assembly comprises a pressure switch 9 and a pressure gauge 10, wherein the pressure gauge 10 is used for detecting and displaying the pressure in the first air cavity 100, and the pressure switch 9 is used for cutting off the first air inlet electromagnetic valve 8 to close and charge air into the first air cavity when the pressure in the first air cavity 100 reaches a preset value.
For better remote control, the first air inlet electromagnetic valve 8, the second air inlet electromagnetic valve 11 and the air outlet electromagnetic valve 6 are all connected with a remote controller. In order to protect the first air inlet electromagnetic valve 8, the second air inlet electromagnetic valve 11 and the air outlet electromagnetic valve 6, a dust cover 1 is arranged on the valve casing, and the first air inlet electromagnetic valve 8, the second air inlet electromagnetic valve 11 and the air outlet electromagnetic valve 6 are all arranged in the dust cover 1.
The working principle of the pipe pressure type explosion-proof valve is as follows: the first air inlet electromagnetic valve 8 is opened to charge air into the first air cavity 100, and when the preset value is reached, the pressure switch 9 cuts off the first air inlet electromagnetic valve 8 to close and charge air into the first air cavity. When the pneumatic pipe clamp valve is required to be closed, a closing signal is provided for the second air inlet electromagnetic valve 11, the second air inlet electromagnetic valve 11 is opened at a millisecond-level speed, the air in the first air cavity 100 enters the second air cavity 200 formed by the gap between the rubber pipe 4 and the valve inner shell 12 at a faster millisecond-level speed, the rubber pipe is closed at a millisecond-level speed, at the moment, the pressure in the first air cavity 100 is lower than a set value, the pressure switch enables the first air inlet electromagnetic valve 8 to be opened, and automatic air supplementing to the specified pressure is achieved. When the pipe pressure type explosion-proof valve needs to be opened again, the air release electromagnetic valve 6 is opened first to remove air in the second air cavity between the rubber pipe 4 and the valve inner shell 12, so that the rubber pipe 4 is reset. When maintenance is needed, the blow-down valve 7 is opened first to remove the dirt in the second air cavity.
In summary, the pipe pressure type explosion-proof valve provided by the invention adopts the valve shell and the valve inner shell to enclose the sealed first air cavity, so that the first air cavity is used as an air inlet air source storage position of the second air cavity, and air can rapidly enter the second air cavity through the second air inlet electromagnetic valve to finish closing of the pipe pressure type explosion-proof valve, and closing response time is reduced. Therefore, the invention effectively overcomes various defects in the prior art and has high industrial utilization value.
The above embodiments are merely illustrative of the principles of the present invention and its effectiveness, and are not intended to limit the invention. Modifications and variations may be made to the above-described embodiments by those skilled in the art without departing from the spirit and scope of the invention. Accordingly, it is intended that all equivalent modifications and variations of the invention be covered by the claims, which are within the ordinary skill of the art, be within the spirit and scope of the present disclosure.
Claims (7)
1. The utility model provides a drive pipe pressure formula flame proof valve which characterized in that includes valve casing, valve inner shell and rubber tube, and the valve casing is fixed in the outside of valve inner shell and forms sealed first air cavity between the two, the rubber tube is coaxial wears to establish in the valve inner shell and the tip of both is fixed to link to each other, forms sealed second air cavity between rubber tube and the valve inner shell, is the medium passageway in the rubber tube; the first air inlet electromagnetic valve is communicated with the first air cavity and is used for supplying air to the first air cavity, the air inlet of the second air inlet electromagnetic valve is positioned in the first air cavity, the air outlet of the second air inlet electromagnetic valve is communicated with the second air cavity, and the air outlet electromagnetic valve is communicated with the second air cavity and is used for discharging air from the second air cavity; the valve housing is also provided with a pressure detection assembly for measuring the pressure in the first air cavity, and the first air inlet electromagnetic valve, the second air inlet electromagnetic valve, the air release electromagnetic valve and the pressure detection assembly are all connected with the controller;
the rubber tube and the two ends of the valve inner shell are fixed, and the valve shell is fixed outside the valve inner shell, so that the first air cavity is arranged around the periphery of the second air cavity;
the first air inlet electromagnetic valve is opened to charge air into the first air cavity, and when the preset value is reached, the pressure switch cuts off the first air inlet electromagnetic valve to close and charge air into the first air cavity; when the pneumatic pipe clamp valve is required to be closed, a closing signal is provided for the second air inlet electromagnetic valve, the second air inlet electromagnetic valve is opened at a millisecond-level speed, the air in the first air cavity enters the second air cavity formed by a gap between the rubber pipe and the valve inner shell at a faster millisecond-level speed, the rubber pipe is closed at a millisecond-level speed, at the moment, the pressure in the first air cavity is lower than a set value, and the pressure switch enables the first air inlet electromagnetic valve to be opened, so that automatic air supplementing to the specified pressure is realized.
2. The active tube pressure type flameproof valve according to claim 1, wherein: the end part of the valve inner shell is provided with a flange plate, and the end part of the rubber tube is fastened between the flange plate and the external flange plate.
3. The active tube pressure type flameproof valve according to claim 1, wherein: the wall thickness of the two ends of the rubber tube is larger than that of the middle part of the rubber tube.
4. The active tube pressure type flameproof valve according to claim 1, wherein: the gap between the middle of the rubber tube and the valve inner shell is larger than the gap between the two ends of the rubber tube and the two ends of the valve inner shell.
5. The active tube pressure type flameproof valve according to claim 1, wherein: the first air inlet electromagnetic valve, the second air inlet electromagnetic valve and the air discharge electromagnetic valve are all pilot electromagnetic valves.
6. The active tube pressure type flameproof valve according to claim 1, wherein: the valve housing is welded to the valve inner housing.
7. The active tube pressure type flameproof valve according to claim 1, wherein: a plurality of axially extending reinforcing ribs are circumferentially distributed on the rubber tube.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810299336.0A CN108331939B (en) | 2018-04-04 | 2018-04-04 | Driving pipe pressure type explosion-proof valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810299336.0A CN108331939B (en) | 2018-04-04 | 2018-04-04 | Driving pipe pressure type explosion-proof valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108331939A CN108331939A (en) | 2018-07-27 |
| CN108331939B true CN108331939B (en) | 2024-03-22 |
Family
ID=62932625
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810299336.0A Active CN108331939B (en) | 2018-04-04 | 2018-04-04 | Driving pipe pressure type explosion-proof valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108331939B (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3617522C1 (en) * | 1986-05-24 | 1987-07-02 | Vsr Eng Foerdertechnik | Device for the abrupt shut-off of pipelines, especially dust-carrying pipelines, in the event of explosions |
| CN103542128A (en) * | 2012-07-10 | 2014-01-29 | 上海阀门五厂有限公司 | Pneumatic tube clamping valve |
| CN106090291A (en) * | 2016-05-26 | 2016-11-09 | 扬州市君睿创智工业设计有限公司 | A kind of operated pneumatic valve |
| CN106499840A (en) * | 2016-10-19 | 2017-03-15 | 上海盛唐阀门科技有限公司 | A kind of pneumatic tubing clip valve |
| CN106870942A (en) * | 2017-02-27 | 2017-06-20 | 江苏爵格工业设备有限公司 | A kind of pipe pressure type flame proof valve |
| CN107420579A (en) * | 2017-06-08 | 2017-12-01 | 江苏远洋阀门智控股份有限公司 | A kind of screw thread type pneumatic tube pinch valve |
| CN107575601A (en) * | 2017-08-23 | 2018-01-12 | 上海泽宁环保科技有限公司 | A kind of negative pressure source power vacuum valve element, sealing device and interface valve |
| CN208169585U (en) * | 2018-04-04 | 2018-11-30 | 江苏爵格工业设备有限公司 | Active pipe pressure type flame proof valve |
-
2018
- 2018-04-04 CN CN201810299336.0A patent/CN108331939B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3617522C1 (en) * | 1986-05-24 | 1987-07-02 | Vsr Eng Foerdertechnik | Device for the abrupt shut-off of pipelines, especially dust-carrying pipelines, in the event of explosions |
| CN103542128A (en) * | 2012-07-10 | 2014-01-29 | 上海阀门五厂有限公司 | Pneumatic tube clamping valve |
| CN106090291A (en) * | 2016-05-26 | 2016-11-09 | 扬州市君睿创智工业设计有限公司 | A kind of operated pneumatic valve |
| CN106499840A (en) * | 2016-10-19 | 2017-03-15 | 上海盛唐阀门科技有限公司 | A kind of pneumatic tubing clip valve |
| CN106870942A (en) * | 2017-02-27 | 2017-06-20 | 江苏爵格工业设备有限公司 | A kind of pipe pressure type flame proof valve |
| CN107420579A (en) * | 2017-06-08 | 2017-12-01 | 江苏远洋阀门智控股份有限公司 | A kind of screw thread type pneumatic tube pinch valve |
| CN107575601A (en) * | 2017-08-23 | 2018-01-12 | 上海泽宁环保科技有限公司 | A kind of negative pressure source power vacuum valve element, sealing device and interface valve |
| CN208169585U (en) * | 2018-04-04 | 2018-11-30 | 江苏爵格工业设备有限公司 | Active pipe pressure type flame proof valve |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108331939A (en) | 2018-07-27 |
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