CN114042282A - Pressure gauge for automatic alarm fire extinguisher - Google Patents
Pressure gauge for automatic alarm fire extinguisher Download PDFInfo
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- CN114042282A CN114042282A CN202111324779.9A CN202111324779A CN114042282A CN 114042282 A CN114042282 A CN 114042282A CN 202111324779 A CN202111324779 A CN 202111324779A CN 114042282 A CN114042282 A CN 114042282A
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- fire extinguisher
- pressure gauge
- matched
- dial plate
- plunger
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- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62C—FIRE-FIGHTING
- A62C37/00—Control of fire-fighting equipment
- A62C37/50—Testing or indicating devices for determining the state of readiness of the equipment
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- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62C—FIRE-FIGHTING
- A62C13/00—Portable extinguishers which are permanently pressurised or pressurised immediately before use
- A62C13/76—Details or accessories
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- Health & Medical Sciences (AREA)
- Public Health (AREA)
- Business, Economics & Management (AREA)
- Emergency Management (AREA)
- Measuring Fluid Pressure (AREA)
Abstract
The invention relates to the technical field of pressure gauges of fire extinguishers, in particular to a pressure gauge for an automatic alarm fire extinguisher. The invention aims to solve the technical problems that active warning of pressure relief faults is difficult to carry out, and fire conditions in non-open areas such as buildings and the like are difficult to protect users. In order to solve the technical problems, the invention provides a pressure gauge for an automatic alarm fire extinguisher, which consists of a warning protection mechanism and a trigger mechanism, wherein a gas storage ring can be opened to start a warning part by utilizing the deformation of an internal bourdon tube of the pressure gauge, the pressure relief fault of the fire extinguisher is actively prompted by sound, the use safety is better, the refrigerating gas for starting the warning part in a curved box can be sprayed and dispersed around a handle of the fire extinguisher when the fire extinguisher is normally used for extinguishing fire, a certain protection effect on the hand of a user can be realized in a fire scene, the pressure gauge can be conveniently obtained by modifying the original pressure gauge, and the manufacturing and using cost of the pressure gauge is greatly reduced.
Description
Technical Field
The invention relates to the technical field of fire extinguisher pressure gauges, in particular to a pressure gauge for an automatic alarm fire extinguisher.
Background
The fire extinguisher is a portable fire extinguishing tool. Chemical substances are placed in the fire extinguisher for saving and extinguishing fire. The fire extinguisher is one of common fire-proof facilities, is stored in public places or places where fires may occur, different types of fire extinguishers are filled with different components and are specially designed for different fires, and the common fire extinguishers generally spray extinguishing agents to fire points by utilizing high pressure in a bottle to extinguish the fire, so the pressure in the bottle is one of the major overhauling points of the fire extinguishers.
At present, a user needs to check the pressure storage type fire extinguisher regularly, and a bourdon tube type pressure gauge is connected to a fire extinguisher bottle for conveniently reading the pressure in the bottle. The inventor finds that the prior art has the following problems in the process of researching the common pressure gauge for the fire extinguisher: 1. the existing device can only passively display the pressure in the fire extinguisher bottle, needs the user to observe by himself, is difficult to actively warn the pressure relief fault, is easy to influence the fire fighting of sudden fire, and has poor use safety; 2. the fire condition to non-open areas such as in the building is difficult to play the protection to user self, and the hand of operation fire extinguisher is injured easily, uses convenience inadequately.
Disclosure of Invention
Aiming at the defects of the prior art, the invention provides a pressure gauge for an automatic alarm fire extinguisher, which solves the problems that the existing device can only passively display the pressure in a fire extinguisher bottle, needs the user to observe by himself, is difficult to actively warn the pressure relief fault, is easy to influence the fire fighting of sudden fire, has poor use safety, is difficult to protect the user against the fire in non-open areas such as a building, is easy to hurt the hand for operating the fire extinguisher, and is inconvenient to use.
In order to achieve the purpose, the invention is realized by the following technical scheme: the utility model provides an automatic manometer for alarm and fire extinguisher, includes the dial plate, the fixed surface of dial plate alternates there is the admission joint, the one end of admission joint and fixedly connected with in the dial plate rather than the bourdon tube of inside intercommunication, the inside of dial plate is rotated through the axostylus axostyle and is connected with fan-shaped tooth, and the fixed surface of fan-shaped tooth is connected with the swing arm, the swing arm is kept away from the one end of fan-shaped tooth and is articulated to have the pull rod, and the top of pull rod articulates on the bourdon tube.
The surface of air inlet joint rotates and is connected with the tooth soon with fan-shaped tooth engaged with, and revolves the fixed surface of tooth and be connected with the pointer, the surface of dial plate connects line threaded connection through revolving has the gas storage ring, the outside fixedly connected with on gas storage ring surface rather than matched with warning protection machanism, and the inside of gas storage ring be provided with warning protection machanism and bourdon tube matched with trigger mechanism.
Preferably, warning protection machanism includes bent box, bent box fixed connection is in the top surface of gas storage ring, and the top surface of bent box inner wall is connected with the turbine through the jack-post rotation, the inner wall fixedly connected with of bent box strikes the bell with turbine matched with, the fumarole with turbine matched with is seted up on the surface of gas storage ring, the scattered spout with fumarole matched with has been seted up on the surface of bent box.
Preferably, the triggering mechanism comprises a sleeve, the sleeve is fixedly connected to the inner wall of the gas storage ring, the surface of the sleeve is provided with a gas inlet hole matched with the warning protection mechanism, the inside of the sleeve is slidably connected with a plunger matched with the gas inlet hole, the surface of the plunger is movably sleeved with a top spring, and two ends of the top spring are respectively and fixedly connected with the plunger and the gas storage ring;
the bottom end of the plunger penetrates through the gas storage ring, an embedded groove is formed in the bottom end of the plunger, a clamping connector is connected inside the embedded groove in a sliding mode, a pushing spring is movably sleeved on the surface of the clamping connector, and two ends of the pushing spring are fixedly connected with the plunger and the clamping connector respectively;
the dial plate surface is seted up with joint head matched with slot, and the surface of joint head has seted up spherical draw-in groove, the fixed surface of bourdon tube is connected with the spherical tapered end with spherical draw-in groove matched with.
Preferably, the inner wall of the dial plate is provided with a mark sticker matched with the pointer.
Preferably, a bearing is arranged at the joint of the shaft column and the crank box.
Preferably, the clamping joint is formed by hinging a head part and a rod part, and the maximum rotation angle of the head part is 10 degrees.
Preferably, the surface of the plunger is fixedly sleeved with a sealing rubber sleeve matched with the sleeve.
Preferably, the sleeve and the plunger are both made of polyformaldehyde resin materials.
Advantageous effects
The invention provides a pressure gauge for an automatic alarm fire extinguisher. Compared with the prior art, the method has the following beneficial effects:
(1) this automatic alarm is manometer for fire extinguisher links common manometer and warning protection machanism cooperation through setting up trigger mechanism for deformation of the inside bourdon tube of usable manometer opens gas storage ring and starts warning part when pressure release in the fire extinguisher bottle, through sound initiative suggestion fire extinguisher pressure release trouble, the safety in utilization is better.
(2) This automatic manometer for alarm extinguisher warns through the change of bottle internal gas pressure when, can also be used for starting the gaseous dispersion of refrigeration blowout of warning part around the fire extinguisher handle in the song box when normal use fire extinguisher extinguishes a fire, can play certain guard action to user's hand in the scene of a fire.
(3) This automatic alarm manometer for extinguisher is through warning protection machanism and trigger mechanism design for external module for the device can be convenient repacking on original manometer obtain, greatly reduced the device make use cost.
Drawings
FIG. 1 is a front cross-sectional view of a structure of the present invention;
FIG. 2 is an enlarged view of the invention at A in FIG. 1;
FIG. 3 is an enlarged view of the invention at B in FIG. 1;
FIG. 4 is a schematic perspective view of the dial plate of FIG. 1 according to the present invention;
fig. 5 is a schematic perspective view of the warning protection mechanism in fig. 1 according to the present invention.
In the figure: 1. a dial plate; 2. an air inlet joint; 3. a bourdon tube; 4. sector-shaped teeth; 5. swinging arms; 6. a pull rod; 7. rotating the teeth; 8. a pointer; 9. a gas storage ring; 10. a warning protection mechanism; 1001. a koji box; 1002. a column shaft; 1003. a turbine; 1004. knocking a bell; 1005. a gas injection hole; 1006. a dispersing nozzle; 11. a trigger mechanism; 1101. a sleeve; 1102. an air inlet; 1103. a plunger; 1104. a spring is supported; 1105. caulking grooves; 1106. a clamping head; 1107. pushing a spring; 1108. a slot; 1109. a spherical clamping groove; 1110. a ball lock head.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1-5, a pressure gauge for an automatic alarm fire extinguisher comprises a dial plate 1, an air inlet connector 2 is fixedly inserted on the surface of the dial plate 1, the device is screwed on the fire extinguisher through the air inlet connector 2, a bourdon tube 3 communicated with the inside of the air inlet connector 2 is fixedly connected at one end of the air inlet connector 2 in the dial plate 1, the bourdon tube 3 can expand and deform according to the pressure in the fire extinguisher transmitted in the air inlet connector 2, a sector gear 4 is rotatably connected in the dial plate 1 through a shaft lever, a swing arm 5 is fixedly connected on the surface of the sector gear 4, a pull rod 6 is hinged at one end of the swing arm 5 far away from the sector gear 4, the top end of the pull rod 6 is hinged on the bourdon tube 3, the deformed bourdon tube 3 can pull the swing arm 5 and the sector gear 4 to swing along the sector gear by the pull rod 6, a rotary gear 7 engaged with the sector gear 4 is rotatably connected on the surface of the air inlet connector 2, and the surface of the rotary tooth 7 is fixedly connected with a pointer 8, the rotary tooth 7 and the pointer 8 can be driven to rotate to display according to the swinging fan-shaped tooth 4 generated by the change of the air pressure in the fire extinguisher, the surface of the dial plate 1 is connected with an air storage ring 9 through a rotary joint thread, the air storage ring 9 is filled with compressed carbon dioxide or similar refrigerating gas, the outer side of the surface of the air storage ring 9 is fixedly connected with a warning protection mechanism 10 matched with the air storage ring, and the inside of the air storage ring 9 is provided with a trigger mechanism 11 matched with the warning protection mechanism 10 and the Bourdon tube 3.
In the invention, the warning protection mechanism 10 comprises a curved box 1001, the curved box 1001 is fixedly connected to the top surface of the gas storage ring 9, the top surface of the inner wall of the curved box 1001 is rotatably connected with a turbine 1003 through a shaft column 1002, the inner wall of the curved box 1001 is fixedly connected with a knocking bell 1004 matched with the turbine 1003, the surface of the gas storage ring 9 is provided with a gas jet hole 1005 matched with the turbine 1003, gas in the gas storage ring 9 is jetted into the curved box 1001 through the gas jet hole 1005 to drive the turbine 1003 to rotate and is matched with the knocking bell 1004 to generate warning sound for prompting a user that a fire extinguisher is in a pressure relief state and possibly has a fault, the surface of the curved box 1001 is provided with a dispersing nozzle 1006 matched with the gas jet hole 1005, the dispersing nozzle 1006 faces a handle of the fire extinguisher, and refrigerating gas in the curved box 1001 is jetted out through the dispersing nozzle 1006 to be dispersed around the handle of the fire extinguisher, so that a certain protection effect on the hands of the user can be achieved in a fire scene.
In the invention, the triggering mechanism 11 comprises a sleeve 1101, the sleeve 1101 is fixedly connected to the inner wall of the gas storage ring 9 and aligned with the gas injection hole 1005, the surface of the sleeve 1101 is provided with a gas inlet hole 1102 matched with the warning protection mechanism 10, the inside of the sleeve 1101 is slidably connected with a plunger 1103 matched with the gas inlet hole 1102, the surface of the plunger 1103 is movably sleeved with a top spring 1104, two ends of the top spring 1104 are respectively fixedly connected with the plunger 1103 and the gas storage ring 9, the plunger 1103 is pushed by the top spring 1104 to be normally inserted into the sleeve 1101 for plugging, in this state, gas in the gas storage ring 9 cannot enter the curved box 1001 to start the warning protection mechanism 10, the bottom end of the plunger 1103 penetrates through the gas storage ring 9, the bottom end of the plunger 1103 is provided with a caulking groove 1105, the inside of the caulking groove 1105 is slidably connected with a clamping connector 1106, the inside of the caulking groove 1105 is provided with a limiting groove, the surface of the clamping connector 1106 is fixedly connected with a limiting block matched with the limiting groove, they ensure that the clamping head 1106 slides smoothly along the caulking groove 1105 and simultaneously can avoid the clamping head 1106 from falling off from the plunger 1103, the surface of the clamping head 1106 is movably sleeved with a push spring 1107, two ends of the push spring 1107 are respectively fixedly connected with the plunger 1103 and the clamping head 1106, the clamping head 1106 is pressed towards the plunger 1103 direction to avoid interference on the screwing of the gas storage ring 9, the surface of the dial 1 is provided with a slot 1108 matched with the clamping head 1106, the surface of the clamping head 1106 is provided with a spherical clamping groove 1109, the surface of the Bourdon tube 3 is fixedly connected with a spherical lock head 1110 matched with the spherical clamping groove 1109, after the gas storage ring 9 is screwed on the dial 1, the push spring 1107 pushes the clamping head 1106 to be inserted into the slot 1108, so that the spherical clamping groove 1109 is embedded with the spherical lock head 1110, when the pressure of the fire extinguisher is reduced, the Bourdon tube 3 retracts to drive the spherical lock head 1110 to displace downwards, at the moment, the side edge of the spherical lock head 1109 is embedded into the spherical clamping head 1101 to drive the clamping head 1106 and the plunger to synchronously move downwards and unlock the sleeve, so that the gas injection curved box 1001 in the gas storage ring 9 starts the warning protection mechanism 10.
In the invention, the inner wall of the dial plate 1 is provided with an identification sticker matched with the pointer 8 and used for judging the pressure condition of the fire extinguisher by matching with the pointer 8.
In the invention, the bearing is arranged at the joint of the shaft column 1002 and the curved box 1001, and the bearing can effectively reduce the friction coefficient of the shaft column 1002 in the movement process, and can ensure the rotation precision of the shaft column while limiting.
In the invention, the clamping joint 1106 is formed by hinging the head part and the rod part, and the maximum rotation angle of the head part is 10 degrees, so that the clamping joint 1106 can slightly incline along with the retraction of the Bourdon tube 3, and the clamping stagnation caused by transverse pulling is avoided.
In the present invention, a sealing rubber sleeve matching with the sleeve 1101 is fixedly sleeved on the surface of the plunger 1103.
In the invention, the sleeve 1101 and the plunger 1103 are both made of polyformaldehyde resin materials, and the materials have the hardness, strength and rigidity similar to those of metals, good self-lubricating property, fatigue resistance and chemical resistance, and low price, so that the overall use cost is greatly reduced.
When the fire extinguisher is used, firstly, the dial 1 is screwed on the fire extinguisher through the air inlet connector 2, the Bourdon tube 3 is deformed by pressure to enable the spherical lock 1110 to reach a preset position, then the air storage ring 9 is screwed on the dial 1, the clamping connector 1106 is inserted into the slot 1108 on the dial 1 to be embedded with the spherical lock 1110, if the fire extinguisher has a pressure relief fault, the Bourdon tube 3 retracts along with the reduction of pressure and drives the spherical lock 1110 to displace towards the lower right, at the moment, the spherical lock 1110 is embedded into the side edge of the spherical clamping groove 1109 to drive the clamping connector 1106 and the plunger 1103 to synchronously move downwards and unlock the sleeve 1101, so that the gas in the air storage ring 9 is injected into the curved box 1001 to start the warning protection mechanism 10, the gas in the air storage ring 9 is injected into the curved box 1001 through the air injection hole 1005 to drive the turbine 1003 to rotate and is matched with the knocking bell 1004 to generate warning sound for reminding a user that the fire extinguisher is in a pressure relief state and possibly has a fault, and when the fire extinguisher is used in a fire scene, the operation can be repeated due to normal pressure change, and meanwhile, the refrigerating gas in the curved box 1001 is sprayed out from the dispersing nozzle 1006 and can be dispersed around the fire extinguisher handle, so that a certain protection effect on the hands of a user can be achieved in a fire scene.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (8)
1. The utility model provides an automatic alarm manometer for extinguisher, includes dial plate (1), its characterized in that: the dial plate comprises a dial plate (1) and is characterized in that an air inlet connector (2) is fixedly inserted into the surface of the dial plate (1), a bourdon tube (3) communicated with the inside of the dial plate is fixedly connected to one end of the air inlet connector (2) in the dial plate (1), sector teeth (4) are rotatably connected to the inside of the dial plate (1) through a shaft lever, a swing arm (5) is fixedly connected to the surface of the sector teeth (4), a pull rod (6) is hinged to one end, far away from the sector teeth (4), of the swing arm (5), and the top end of the pull rod (6) is hinged to the bourdon tube (3);
the surface of air inlet joint (2) rotates and is connected with and revolves tooth (7) with fan-shaped tooth (4) engaged with, and revolves fixed surface of tooth (7) and be connected with pointer (8), the surface of dial plate (1) connects line threaded connection through revolving has gas storage ring (9), the outside fixedly connected with on gas storage ring (9) surface rather than matched with warning protection machanism (10), and the inside of gas storage ring (9) be provided with warning protection machanism (10) and bourdon tube (3) matched with trigger mechanism (11).
2. The pressure gauge for the automatic alarm fire extinguisher according to claim 1, characterized in that: warning protection machanism (10) are including bent box (1001), bent box (1001) fixed connection is in the top surface of gas storage ring (9), and the top surface of bent box (1001) inner wall rotates through jack-post (1002) and is connected with turbine (1003), the inner wall fixedly connected with of bent box (1001) strikes bell (1004) with turbine (1003) matched with, gas storage ring (9) surface seted up with turbine (1003) matched with fumarole (1005), scattered spout (1006) with fumarole (1005) matched with have been seted up on the surface of bent box (1001).
3. The pressure gauge for the automatic alarm fire extinguisher according to claim 1, characterized in that: the trigger mechanism (11) comprises a sleeve (1101), the sleeve (1101) is fixedly connected to the inner wall of the gas storage ring (9), a gas inlet hole (1102) matched with the warning protection mechanism (10) is formed in the surface of the sleeve (1101), a plunger (1103) matched with the gas inlet hole (1102) is connected to the inside of the sleeve (1101) in a sliding mode, a top spring (1104) is sleeved on the surface of the plunger (1103) in a movable mode, and two ends of the top spring (1104) are fixedly connected with the plunger (1103) and the gas storage ring (9) respectively;
the bottom end of the plunger (1103) penetrates through the gas storage ring (9), the bottom end of the plunger (1103) is provided with an embedded groove (1105), the inside of the embedded groove (1105) is connected with a clamping joint (1106) in a sliding manner, the surface of the clamping joint (1106) is movably sleeved with a push spring (1107), and two ends of the push spring (1107) are respectively fixedly connected with the plunger (1103) and the clamping joint (1106);
the dial plate comprises a dial plate body (1), wherein a slot (1108) matched with a clamping joint (1106) is formed in the surface of the dial plate body (1), a spherical clamping groove (1109) is formed in the surface of the clamping joint (1106), and a spherical lock head (1110) matched with the spherical clamping groove (1109) is fixedly connected to the surface of the Bourdon tube (3).
4. The pressure gauge for the automatic alarm fire extinguisher according to claim 1, characterized in that: the inner wall of the dial plate (1) is provided with a mark sticker matched with the pointer (8).
5. The pressure gauge for the automatic alarm fire extinguisher according to claim 2, characterized in that: and a bearing is arranged at the joint of the shaft column (1002) and the curved box (1001).
6. The pressure gauge for the automatic alarm fire extinguisher according to claim 3, characterized in that: the clamping joint (1106) is formed by hinging a head part and a rod part, and the maximum rotation angle of the head part is 10 degrees.
7. The pressure gauge for the automatic alarm fire extinguisher according to claim 3, characterized in that: and a sealing rubber sleeve matched with the sleeve (1101) is fixedly sleeved on the surface of the plunger (1103).
8. The pressure gauge for the automatic alarm fire extinguisher according to claim 3, characterized in that: the sleeve (1101) and the plunger (1103) are both made of polyformaldehyde resin materials.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111324779.9A CN114042282B (en) | 2021-11-10 | 2021-11-10 | Pressure gauge for automatic alarm fire extinguisher |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111324779.9A CN114042282B (en) | 2021-11-10 | 2021-11-10 | Pressure gauge for automatic alarm fire extinguisher |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114042282A true CN114042282A (en) | 2022-02-15 |
| CN114042282B CN114042282B (en) | 2022-08-19 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111324779.9A Active CN114042282B (en) | 2021-11-10 | 2021-11-10 | Pressure gauge for automatic alarm fire extinguisher |
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| Country | Link |
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| CN (1) | CN114042282B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117815612A (en) * | 2024-03-06 | 2024-04-05 | 厦门一泰消防科技开发有限公司 | Internal pressure detection device of fire extinguisher |
Citations (6)
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|---|---|---|---|---|
| GB189818471A (en) * | 1898-08-29 | 1899-08-05 | Frederick Hunt Lester | Improvement in Alarm Pressure Gauges. |
| US3952598A (en) * | 1975-07-28 | 1976-04-27 | Dresser Industries, Inc. | Pressure gauge construction |
| CN106441692A (en) * | 2016-11-09 | 2017-02-22 | 江苏互安消防科技有限公司 | Automatic alarming fire extinguisher pressure gage |
| CN208043305U (en) * | 2018-04-18 | 2018-11-02 | 四川久天测控技术有限公司 | A kind of pressure gauge for fire extinguisher |
| CN210830721U (en) * | 2019-08-16 | 2020-06-23 | 上海磐远机械有限公司 | Automatic alarm safety pressure reducer |
| CN112050991A (en) * | 2020-08-20 | 2020-12-08 | 台州阿凡提电子科技有限公司 | Pressure gauge |
-
2021
- 2021-11-10 CN CN202111324779.9A patent/CN114042282B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB189818471A (en) * | 1898-08-29 | 1899-08-05 | Frederick Hunt Lester | Improvement in Alarm Pressure Gauges. |
| US3952598A (en) * | 1975-07-28 | 1976-04-27 | Dresser Industries, Inc. | Pressure gauge construction |
| CN106441692A (en) * | 2016-11-09 | 2017-02-22 | 江苏互安消防科技有限公司 | Automatic alarming fire extinguisher pressure gage |
| CN208043305U (en) * | 2018-04-18 | 2018-11-02 | 四川久天测控技术有限公司 | A kind of pressure gauge for fire extinguisher |
| CN210830721U (en) * | 2019-08-16 | 2020-06-23 | 上海磐远机械有限公司 | Automatic alarm safety pressure reducer |
| CN112050991A (en) * | 2020-08-20 | 2020-12-08 | 台州阿凡提电子科技有限公司 | Pressure gauge |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117815612A (en) * | 2024-03-06 | 2024-04-05 | 厦门一泰消防科技开发有限公司 | Internal pressure detection device of fire extinguisher |
| CN117815612B (en) * | 2024-03-06 | 2024-05-03 | 厦门一泰消防科技开发有限公司 | Internal pressure detection device of fire extinguisher |
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| Publication number | Publication date |
|---|---|
| CN114042282B (en) | 2022-08-19 |
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