CN113028070A - Pressure display valve and gas tool equipped with same - Google Patents
Pressure display valve and gas tool equipped with same Download PDFInfo
- Publication number
- CN113028070A CN113028070A CN201911356854.2A CN201911356854A CN113028070A CN 113028070 A CN113028070 A CN 113028070A CN 201911356854 A CN201911356854 A CN 201911356854A CN 113028070 A CN113028070 A CN 113028070A
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- China
- Prior art keywords
- valve body
- accommodating space
- shell
- opening
- 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.)
- Pending
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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
- 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
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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
-
- 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
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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
- F16K1/46—Attachment of sealing rings
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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
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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
- F16K31/44—Mechanical actuating means
- F16K31/60—Handles
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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
- F16K37/00—Special means in or on valves or other cut-off apparatus for indicating or recording operation thereof, or for enabling an alarm to be given
- F16K37/0008—Mechanical means
-
- 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
- F16K37/00—Special means in or on valves or other cut-off apparatus for indicating or recording operation thereof, or for enabling an alarm to be given
- F16K37/0075—For recording or indicating the functioning of a valve in combination with test equipment
- F16K37/0083—For recording or indicating the functioning of a valve in combination with test equipment by measuring valve parameters
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Indication Of The Valve Opening Or Closing Status (AREA)
Abstract
The invention provides a pressure display valve and a gas tool provided with the pressure display valve, wherein the pressure display valve comprises a shell and a valve body, an accommodating space is arranged in the shell, one end of the accommodating space is connected with the outer periphery of the shell, a viewing hole penetrates through the shell, the viewing hole penetrates through the surface of the shell and is communicated with the accommodating space and the outer periphery of the shell, the valve body can be movably arranged in the accommodating space between a first position and a second position, the valve body is provided with a mark, when the valve body is at the first position, the mark does not correspond to the viewing hole, when the valve body is at the second position, the mark is displayed in the viewing hole, and the display valve can judge whether the pressure of gas flow acts through vision through the structure.
Description
Technical Field
The present invention relates to a display valve, and more particularly, to a pressure display valve.
Background
Please refer to taiwan patent No. I506233, which discloses a gun head of a gas hot air gun, comprising a fuel supply device and a flow guide device, wherein the flow guide device comprises a combustion base, one end of the combustion base is connected to the fuel supply device, the combustion base is provided with a combustion chamber communicating with two ends of the combustion base, the flow guide device is further provided with a first flow guide plate and a second flow guide plate in the combustion base, the first flow guide plate and the second flow guide plate are located at two ends of the combustion base away from each other, the first flow guide plate is provided with a plurality of first through holes, the second flow guide plate is provided with a plurality of second through holes, and the central axis of any one of the first through holes and the central axis of any one of the second through holes are not collinear.
However, the gun head can release gas, close gas or adjust gas flow rate only by rotating the screw at the rear part when in use, but no obvious prompt is provided when the gas is released or closed, and whether the gas flow sound exists or whether the ignition is directly attempted can be judged only by hearing.
Disclosure of Invention
The invention aims to: the pressure display valve and the gas tool provided with the pressure display valve are provided, and the technical problems in the prior art are solved.
In order to achieve the purpose, the invention adopts the technical scheme that:
the utility model provides a pressure display valve, including a shell and a valve body, be provided with an accommodation space in this shell, the outer peripheral edges of this shell are connected to the one end of this accommodation space, this shell wears to be equipped with one and watches the hole, should watch the surface that the hole runs through this shell and the outer peripheral edges of this accommodation space and this shell, this valve body can set up in this accommodation space with removing between primary importance and second position, this valve body is provided with a mark, this valve body is when this primary importance, the hole should not be watched to this mark, this valve body is when this second position, this mark shows in should watch the hole. The display valve can judge whether the display valve is under the action of airflow pressure through vision through the structure.
The valve body can slide between the first position and the second position along the axial direction of a virtual datum line, an airtight portion is arranged on the valve body along the radial outer periphery of the virtual datum line, the airtight portion abuts against the radial inner periphery of the accommodating space along the virtual datum line, one end of the accommodating space, which is connected with the outer periphery of the shell, forms an opening, the accommodating space is divided into a first area and a second area by taking the airtight portion as a boundary, the first area is arranged between the airtight portion and the opening, the second area is arranged on one side, opposite to the opening, of the airtight portion, the viewing hole is communicated with the second area, and airflow of the first area and airflow of the second area are not communicated.
The accommodating space is provided with a narrow part and a wide part along the radial inner periphery of the virtual datum line, the narrow part is adjacent to the opening, the wide part is arranged on one side, opposite to the opening, of the narrow part, the width of the narrow part along the radial direction of the virtual datum line is smaller than that of the wide part along the radial direction of the virtual datum line, the airtight part abuts against the wide part, one end of the valve body is provided with a stabilizing part, and the stabilizing part is slidably arranged in the narrow part.
The valve body can move towards the second position under the action of airflow pressure, a bottom surface is arranged on the inner peripheral edge opposite to one end of the opening in the accommodating space, an elastic piece is arranged in the accommodating space, one end of the elastic piece abuts against the bottom surface, the other end of the elastic piece abuts against the valve body, and the elastic piece can push the valve body to move towards the first position.
One end of the valve body is concavely provided with a groove, and one end of the elastic piece opposite to the bottom surface is inserted into the groove.
The shell comprises a connecting piece and a cover piece, the cover piece is fixedly connected to the connecting piece, the accommodating space is arranged between the connecting piece and the cover piece, the opening is arranged on the connecting piece, and the bottom surface is arranged on the cover piece.
The invention also provides a gas tool provided with the pressure display valve, which comprises a headstock and an adjusting piece, wherein the headstock is internally provided with a slot, a first channel and a second channel, the shell is connected with the headstock, the opening is arranged between the first channel and the second channel, the adjusting piece can be movably arranged in the slot between a closing position and an opening position, when the adjusting piece is at the closing position, the airflow of the first channel cannot enter the second channel and the containing space, the valve body is positioned at the first position, when the adjusting piece is at the opening position, the airflow of the first channel can enter the second channel and the containing space, and the valve body moves to the second position. The gas tool can visually judge whether the gas is opened or closed through the structure.
According to the structure, whether the gas is acted by airflow pressure or not can be judged visually, and the gas is judged to be opened or closed visually.
Drawings
FIG. 1 is a perspective view of a gas tool with a pressure display valve according to the present invention.
Fig. 2 is an exploded perspective view of the gas tool equipped with a pressure indicating valve according to the present invention.
Fig. 3 is a sectional view showing the construction of a gas tool adjusting member equipped with a pressure display valve of the present invention in a closed position.
FIG. 4 is a sectional view of a valve body of a gas tool equipped with a pressure indicating valve according to the present invention in a first position.
Fig. 5 is a perspective view showing the gas tool with a pressure indicating valve of the present invention attached to a gas canister.
FIG. 6 is a sectional view showing the structure of the regulator of gas tool equipped with a pressure display valve of the present invention in an open position.
FIG. 7 is a sectional view of a valve body of a gas tool equipped with a pressure indicating valve according to the present invention at a second position.
Description of reference numerals: 10 shows a valve; 20 a housing; 21, an accommodating space; 211 is opened; 212 a first region; 213 a second region; 214 narrow portion; 215 wide portion; 216 bottom surface; 22 a viewing aperture; 23 an elastic member; 24 connecting pieces; 25 a cover member; 30 a valve body; 31, marking; a 32 airtight part; 33 a stabilizer; 34 grooves; a 40 gas tool; 41 a head seat; 411 slot; 412 a first channel; 413 a second channel; 42 an adjustment member; a 90 gas tank; and L is a virtual reference line.
Detailed Description
Referring to fig. 1 to 4, there are shown a perspective view, an exploded view, a sectional view and a sectional view of a gas tool with a pressure display valve according to the present invention. The display valve 10 of the present invention comprises a housing 20 and a valve body 30; wherein:
an accommodating space 21 is provided in the housing 20, one end of the accommodating space 21 is connected to the outer periphery of the housing 20, a viewing hole 22 is formed through the housing 20, and the viewing hole 22 penetrates through the surface of the housing 20 to communicate the accommodating space 21 with the outer periphery of the housing 20.
Fig. 5 to 7 are a perspective view of the gas tool with the pressure display valve connected to the gas canister, a sectional structure view of the adjusting member at the opening position, and a sectional structure view of the valve body at the second position. The valve body 30 is movably disposed in the accommodating space 21 between a first position and a second position, the valve body 30 is provided with a mark 31, when the valve body 30 is in the first position, the mark 31 does not correspond to the viewing hole 22, and when the valve body 30 is in the second position, the mark 31 is displayed in the viewing hole 22.
The valve body 30 can slide between the first position and the second position along an axial direction of a virtual reference line L, the valve body 30 is provided with an airtight portion 32 along a radial outer periphery of the virtual reference line L, the airtight portion 32 abuts against an inner periphery of the accommodating space 21 along the radial direction of the virtual reference line L, one end of the accommodating space 21 connected with the outer periphery of the housing 20 forms an opening 211, the accommodating space 21 is divided into a first area 212 and a second area 213 by taking the airtight portion 32 as a boundary, the first area 212 is arranged between the airtight portion 32 and the opening 211, the second area 213 is arranged on a side of the airtight portion 32 opposite to the opening 211, the viewing hole 22 communicates with the second area 213, and the first area 212 is not communicated with the second area 213.
The inner circumference of the accommodating space 21 along the radial direction of the virtual reference line L is provided with a narrow portion 214 and a wide portion 215, the narrow portion 214 is adjacent to the opening 211, the wide portion 215 is disposed on a side of the narrow portion 214 opposite to the opening 211, the width of the narrow portion 214 along the radial direction of the virtual reference line L is smaller than the width of the wide portion 215 along the radial direction of the virtual reference line L, the airtight portion 32 abuts against the wide portion 215, one end of the valve body 30 is provided with a stable portion 33, and the stable portion 33 is slidably disposed in the narrow portion 214.
The valve body 30 can move to the second position under the action of the air pressure, a bottom surface 216 is arranged on the inner periphery of one end, opposite to the opening 211, in the accommodating space 21, an elastic piece 23 is arranged in the accommodating space 21, one end of the elastic piece 23 abuts against the bottom surface 216, the other end of the elastic piece 23 abuts against the valve body 30, and the elastic piece 23 can push the valve body 30 to move to the first position.
One end of the valve body 30 is recessed with a groove 34, and the end of the elastic member 23 opposite to the bottom surface 216 is inserted into the groove 34.
The housing 20 includes a connecting member 24 and a cover member 25, the cover member 25 is fixedly connected to the connecting member 24, the accommodating space 21 is disposed between the connecting member 24 and the cover member 25, the opening 211 is disposed on the connecting member 24, and the bottom surface 216 is disposed on the cover member 25.
The display valve 10 can be installed on a gas tool 40, the gas tool 40 can be connected to a gas canister 90, the gas tool 40 is provided with a head 41 and an adjusting member 42, the head 41 is provided with a slot 411, a first channel 412 and a second channel 413, the adjusting member 42 is movably disposed in the slot 411 between a closed position and an open position, the housing 20 is connected to the header 41, the opening 211 is disposed between the first channel 412 and the second channel 413, when the adjusting member 42 is in the closed position, the airflow of the first passage 412 cannot enter the second passage 413 and the accommodating space 21, when the valve body 30 is located at the first position, and the adjusting member 42 is located at the open position, the airflow of the first passage 412 can enter the second passage 413 and the accommodating space 21, and the valve body 30 moves to the second position.
When the gas tool 40 is used, the user can operate the adjusting member 42 to move to the open position, the valve body 30 can be moved to the second position under the pressure of the gas flow, and the user can directly view the viewing hole 22, so long as the mark 31 can be seen to indicate that the gas is successfully released, and the ignition can be performed. After the gas tool 40 is used, the user can operate the adjusting member 42 to move to the closing position, the valve body 30 can automatically return to the first position, and the user can only see the mark 31 from the viewing hole 22, which represents that the gas tool has successfully closed.
The display valve 10 can visually judge whether the gas pressure is applied thereto through the above-mentioned structure, and the gas tool 40 can visually judge whether the gas is turned on or off through the above-mentioned structure.
In view of the above, it can be concluded that the present invention has the following advantages:
1. the invention relates to a pressure display valve, which comprises a shell and a valve body, wherein an accommodating space is arranged in the shell, one end of the accommodating space is connected with the outer periphery of the shell, a viewing hole penetrates through the shell, the viewing hole penetrates through the surface of the shell to communicate the accommodating space with the outer periphery of the shell, the valve body can be movably arranged in the accommodating space between a first position and a second position, the valve body is provided with a mark, when the valve body is at the first position, the mark does not correspond to the viewing hole, when the valve body is at the second position, the mark is displayed in the viewing hole, and the display valve can visually judge whether the display valve is acted by airflow pressure through the structure.
2. The invention relates to a gas tool provided with a pressure display valve, wherein the gas tool comprises a headstock and an adjusting piece, a slot, a first channel and a second channel are arranged in the headstock, a shell is connected to the headstock, an opening is arranged between the first channel and the second channel, the adjusting piece can be movably arranged in the slot between a closing position and an opening position, when the adjusting piece is at the closing position, airflow of the first channel cannot enter the second channel and the containing space, a valve body is positioned at the first position, when the adjusting piece is at the opening position, airflow of the first channel can enter the second channel and the containing space, the valve body moves to the second position, and the gas tool can visually judge whether gas is opened or closed through the structure.
Claims (7)
1. A pressure indicating valve, comprising:
the shell is internally provided with an accommodating space, one end of the accommodating space is connected with the outer periphery of the shell, the shell is provided with a viewing hole in a penetrating manner, and the viewing hole penetrates through the surface of the shell to communicate the accommodating space and the outer periphery of the shell;
the valve body can be movably arranged in the accommodating space between a first position and a second position, the valve body is provided with a mark, when the valve body is at the first position, the mark does not correspond to the viewing hole, and when the valve body is at the second position, the mark is displayed in the viewing hole.
2. The pressure indicating valve of claim 1, wherein: the valve body can slide between the first position and the second position along the axial direction of a virtual datum line, an airtight portion is arranged on the valve body along the radial outer periphery of the virtual datum line, the airtight portion abuts against the radial inner periphery of the accommodating space along the virtual datum line, one end of the accommodating space, which is connected with the outer periphery of the shell, forms an opening, the accommodating space is divided into a first area and a second area by taking the airtight portion as a boundary, the first area is arranged between the airtight portion and the opening, the second area is arranged on one side, opposite to the opening, of the airtight portion, the viewing hole is communicated with the second area, and airflow of the first area and airflow of the second area are not communicated.
3. A pressure indicating valve as claimed in claim 2, wherein: the accommodating space is provided with a narrow part and a wide part along the radial inner periphery of the virtual datum line, the narrow part is adjacent to the opening, the wide part is arranged on one side, opposite to the opening, of the narrow part, the width of the narrow part along the radial direction of the virtual datum line is smaller than that of the wide part along the radial direction of the virtual datum line, the airtight part abuts against the wide part, one end of the valve body is provided with a stabilizing part, and the stabilizing part is slidably arranged in the narrow part.
4. A pressure indicating valve according to claim 2 or 3, wherein: the valve body can move towards the second position under the action of airflow pressure, a bottom surface is arranged on the inner peripheral edge opposite to one end of the opening in the accommodating space, an elastic piece is arranged in the accommodating space, one end of the elastic piece abuts against the bottom surface, the other end of the elastic piece abuts against the valve body, and the elastic piece can push the valve body to move towards the first position.
5. The pressure indicating valve of claim 4, wherein: one end of the valve body is concavely provided with a groove, and one end of the elastic piece opposite to the bottom surface is inserted into the groove.
6. The pressure indicating valve of claim 4, wherein: the shell comprises a connecting piece and a cover piece, the cover piece is fixedly connected to the connecting piece, the accommodating space is arranged between the connecting piece and the cover piece, the opening is arranged on the connecting piece, and the bottom surface is arranged on the cover piece.
7. A gas tool provided with a pressure display valve according to any one of claims 2 to 6, comprising:
the shell is connected with the headstock, and the opening is arranged between the first channel and the second channel;
the adjusting piece can be movably arranged in the slot between a closing position and an opening position, when the adjusting piece is at the closing position, the airflow of the first channel cannot enter the second channel and the containing space, the valve body is located at the first position, when the adjusting piece is at the opening position, the airflow of the first channel can enter the second channel and the containing space, and the valve body moves to the second position.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911356854.2A CN113028070A (en) | 2019-12-25 | 2019-12-25 | Pressure display valve and gas tool equipped with same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911356854.2A CN113028070A (en) | 2019-12-25 | 2019-12-25 | Pressure display valve and gas tool equipped with same |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113028070A true CN113028070A (en) | 2021-06-25 |
Family
ID=76458351
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911356854.2A Pending CN113028070A (en) | 2019-12-25 | 2019-12-25 | Pressure display valve and gas tool equipped with same |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113028070A (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3903914A (en) * | 1971-11-08 | 1975-09-09 | Kidde & Co Walter | Gas release valve |
| CN101865468A (en) * | 2009-04-14 | 2010-10-20 | 爱烙达股份有限公司 | Gas burner |
| CN202138378U (en) * | 2011-07-08 | 2012-02-08 | 宁波市镇海国创机车配件有限公司 | Pressure indicator |
| CN206017989U (en) * | 2016-08-26 | 2017-03-15 | 江苏苏盐阀门机械有限公司 | A kind of dual indication valve of pipeline pressure |
| CN106678803A (en) * | 2014-04-25 | 2017-05-17 | 爱烙达股份有限公司 | Head of gas heat gun |
| CN106983974A (en) * | 2016-10-31 | 2017-07-28 | 陈春来 | A kind of fire extinguisher of multifunctional equipment |
| CN108799581A (en) * | 2017-04-27 | 2018-11-13 | 应鸽龙 | Multipurpose automatic pressure-reducing shunt safety valve |
| CN208169663U (en) * | 2018-04-28 | 2018-11-30 | 天津祥嘉流体控制系统有限公司 | A kind of underwater valve actuator |
-
2019
- 2019-12-25 CN CN201911356854.2A patent/CN113028070A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3903914A (en) * | 1971-11-08 | 1975-09-09 | Kidde & Co Walter | Gas release valve |
| CN101865468A (en) * | 2009-04-14 | 2010-10-20 | 爱烙达股份有限公司 | Gas burner |
| CN202138378U (en) * | 2011-07-08 | 2012-02-08 | 宁波市镇海国创机车配件有限公司 | Pressure indicator |
| CN106678803A (en) * | 2014-04-25 | 2017-05-17 | 爱烙达股份有限公司 | Head of gas heat gun |
| CN206017989U (en) * | 2016-08-26 | 2017-03-15 | 江苏苏盐阀门机械有限公司 | A kind of dual indication valve of pipeline pressure |
| CN106983974A (en) * | 2016-10-31 | 2017-07-28 | 陈春来 | A kind of fire extinguisher of multifunctional equipment |
| CN108799581A (en) * | 2017-04-27 | 2018-11-13 | 应鸽龙 | Multipurpose automatic pressure-reducing shunt safety valve |
| CN208169663U (en) * | 2018-04-28 | 2018-11-30 | 天津祥嘉流体控制系统有限公司 | A kind of underwater valve actuator |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
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| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20210625 |