CN112337012A - Remove and fixed dual-purpose fire extinguisher - Google Patents
Remove and fixed dual-purpose fire extinguisher Download PDFInfo
- Publication number
- CN112337012A CN112337012A CN202011222474.2A CN202011222474A CN112337012A CN 112337012 A CN112337012 A CN 112337012A CN 202011222474 A CN202011222474 A CN 202011222474A CN 112337012 A CN112337012 A CN 112337012A
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- CN
- China
- Prior art keywords
- pipe
- fire extinguisher
- sleeve
- transmission
- wall
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- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62C—FIRE-FIGHTING
- A62C31/00—Delivery of fire-extinguishing material
-
- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62C—FIRE-FIGHTING
- A62C13/00—Portable extinguishers which are permanently pressurised or pressurised immediately before use
- A62C13/62—Portable extinguishers which are permanently pressurised or pressurised immediately before use with a single permanently pressurised container
- A62C13/64—Portable extinguishers which are permanently pressurised or pressurised immediately before use with a single permanently pressurised container the extinguishing material being released by means of a valve
-
- 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
- A62C13/78—Suspending or supporting devices
-
- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62C—FIRE-FIGHTING
- A62C31/00—Delivery of fire-extinguishing material
- A62C31/28—Accessories for delivery devices, e.g. supports
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- Health & Medical Sciences (AREA)
- Public Health (AREA)
- Business, Economics & Management (AREA)
- Emergency Management (AREA)
- Quick-Acting Or Multi-Walled Pipe Joints (AREA)
Abstract
The invention relates to the technical field of fire extinguishing devices, and discloses a movable and fixed dual-purpose fire extinguisher, which comprises a movable fire extinguisher, wherein the lower end of the movable fire extinguisher is communicated with a first conveying pipe, and the other end of the first conveying pipe is connected with a second conveying pipe through a pipeline butt joint mechanism; the pipeline docking mechanism comprises a sleeve and an insertion pipe, one end of the sleeve is connected with the first conveying pipe, the insertion pipe is connected with the second conveying pipe, the insertion pipe is inserted into the sleeve, a sealing assembly is connected between the insertion pipe sleeves, transmission grooves are symmetrically formed in the inner wall of the sleeve, a spring is fixedly connected to the bottom of each transmission groove, a transmission block is fixedly connected to the other end of the spring, one end of the transmission block is far away from a fixture block, and a clamping groove matched with the position, corresponding to the fixture block, of the outer pipe wall of the insertion pipe is formed in the. This remove and fixed dual-purpose fire extinguisher can solve present pipeline quick-operation joint and still need twist the nut through the instrument in the use, too loaded down with trivial details problem.
Description
Technical Field
The invention relates to the technical field of fire extinguishing devices, in particular to a movable and fixed dual-purpose fire extinguisher.
Background
At present, many places with unattended operation, dangerous goods storage and special environmental conditions do not have the conditions for installing and fixing the automatic fire extinguishing system, and the equipped mobile fire extinguisher has no automatic starting function, so that when a fire disaster occurs, the fire disaster can not be extinguished in time under the condition that the scene is unattended or personnel are not easy to approach to extinguish the fire, and the optimal time for fire fighting is delayed; in a place where the automatic fire extinguishing system is installed, due to the limitation of the fire extinguishing pipe network, the automatic fire extinguishing system does not extinguish fires outside the protection range of the fire extinguishing pipe network, and the best time for fire fighting can be delayed.
The retrieval publication (announcement) No. CN101513556B discloses a movable and fixed dual-purpose fire extinguishing device, and when the movable and fixed dual-purpose fire extinguishing device is used, the advantages of the fixed fire extinguishing device and the advantages of a movable fire extinguisher are integrated, so that the dual-purpose effect of one device is realized, the fire extinguishing efficiency is improved, and the movable and fixed dual-purpose fire extinguishing device is particularly suitable for being used in places without being attended and storing inflammable and explosive articles; the scheme still has the following technical defects:
this technical scheme fire extinguishing agent conveyer pipe and second fire extinguishing agent conveyer pipe link together through pipeline quick-operation joint, and pipeline quick-operation joint still need twist the nut through the instrument in the use, and is too loaded down with trivial details, and the scheme obviously has the defect.
Disclosure of Invention
Technical problem to be solved
Aiming at the defects of the prior art, the invention provides a movable and fixed dual-purpose fire extinguisher, which has the advantage of improving the efficiency of the connection of two conveying pipelines and solves the problem that the existing pipeline quick connector is too complicated because a nut needs to be screwed by a tool in the use process.
(II) technical scheme
In order to achieve the purpose of improving the efficiency of the connection of two conveying pipelines, the invention provides the following technical scheme: a movable and fixed dual-purpose fire extinguisher comprises a movable fire extinguisher, wherein the lower end of the movable fire extinguisher is communicated with a first conveying pipe, and the other end of the first conveying pipe is connected with a second conveying pipe through a pipeline butt joint mechanism;
the pipeline butt-joint mechanism comprises a sleeve and an insertion pipe, one end of the sleeve is connected with a first conveying pipe, the insertion pipe is connected with a second conveying pipe, the insertion pipe is inserted in the sleeve, a sealing component is connected between the insertion pipe and the sleeve, transmission grooves are symmetrically formed in the inner wall of the sleeve, a spring is fixedly connected to the bottom of each transmission groove, a transmission block is fixedly connected to the other end of each spring, a clamping block is fixedly connected to one end, away from the spring, of each transmission block, a clamping groove is formed in the position, corresponding to the clamping block, of the outer wall of the insertion pipe, matched clamping grooves are formed in the positions, away from the transmission blocks, of the clamping blocks, one end, away from the transmission blocks, of each transmission block is inserted in each clamping groove, a pull rod is fixedly connected to one end, away from the clamping blocks, of each, the spring is sleeved on the rod wall of the pull rod.
Preferably, the seal assembly includes an annular seal groove, the seal groove is formed in an inner wall of the casing, the seal groove is internally sleeved with a seal ring, and an inner wall of the seal ring is arranged on an outer wall of the insertion pipe.
Preferably, four rolling grooves are uniformly and equidistantly formed in an annular shape on the inner wall of the casing pipe at the position far away from one end of the first conveying pipe by taking the insertion pipe as the center, rolling balls are arranged in the rolling grooves, the rolling balls penetrate through notches of the rolling grooves and are connected to the outer wall of the insertion pipe in a rolling manner.
Preferably, the two ends of the transmission block are symmetrically and fixedly connected with sliding blocks, the groove wall of the transmission groove is provided with matched sliding grooves corresponding to the sliding blocks, and the sliding blocks are slidably connected in the corresponding sliding grooves.
Preferably, a sliding rod is fixedly connected in the sliding groove, a matched sliding hole is formed in the position, corresponding to the sliding rod, of the sliding block, the sliding rod penetrates through the sliding hole, and the sliding block is connected to the rod wall of the sliding rod in a sliding mode.
Preferably, the upper end of the movable fire extinguisher is connected with a head, and the head is provided with a manual switch valve, a pressure gauge and a spray pipe.
Preferably, the pull rod, the spring and the axis of the pull hole are overlapped, and one end of the pull rod, which is far away from the transmission block, is fixedly connected with a pull handle.
Preferably, the drive groove is provided between the seal assembly and the ball.
Preferably, one end of the insertion pipe, which is far away from the second conveying pipe, is provided with a limiting ring, and the limiting ring is fixedly connected to the inner pipe wall of the casing pipe.
(III) advantageous effects
Compared with the prior art, the invention provides a movable and fixed dual-purpose fire extinguisher, which has the following beneficial effects:
1. the fire extinguisher with the dual purposes of moving and fixing is characterized in that a pipeline butt joint mechanism is arranged, when a first conveying pipe and a second conveying pipe need to be butted, a sleeve is held, outward pulling force is applied to two pull rods simultaneously, the pull rods drive a clamping block to move synchronously through a transmission block after being stressed, the clamping block is taken into a transmission groove and compresses a spring, an insertion pipe connected with the second conveying pipe is aligned with the sleeve and inserted until the insertion pipe is pushed to a limiting ring and stops moving, then the two pull rods are loosened, the compressed spring pushes the transmission block to reset, the clamping block is pushed out of the transmission groove to be propped against the outer pipe wall of the insertion pipe, then the insertion pipe is slowly rotated until a clamping groove on the insertion pipe moves to a position corresponding to the clamping block, the spring continuously pushes the transmission block to move, the clamping block is inserted into the clamping groove, the insertion pipe and the sleeve are fixed together, and the first conveying pipe and the second conveying pipe can be conveniently connected, the whole process is manually operated, a tool is not needed to be used for screwing the nut, and the efficiency of connecting the two conveying pipes is improved.
2. This remove and fixed dual-purpose fire extinguisher through setting up seal assembly, through the sealing ring in the seal groove for when sleeve pipe and intubate are connected, guarantee the leakproofness between the two, prevent to leak.
Drawings
FIG. 1 is a schematic view of a movable and stationary fire extinguisher according to the present invention;
FIG. 2 is an enlarged view of portion A of FIG. 1;
FIG. 3 is an enlarged view of portion B of FIG. 1;
fig. 4 is an enlarged view of a portion C in fig. 1.
In the figure: the fire extinguisher comprises a movable fire extinguisher 1, a first delivery pipe 2, a second delivery pipe 3, a sleeve 4, an insertion pipe 5, a transmission groove 6, a spring 7, a transmission block 8, a clamping block 9, a clamping groove 10, a pull rod 11, a pull hole 12, a sealing groove 13, a sealing ring 14, a rolling groove 15, a ball 16, a sliding block 17, a sliding groove 18, a sliding rod 19, a head 20, a manual switch valve 21, a pressure gauge 22, a spray pipe 23, a pull handle 24 and a limit ring 25.
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. 1-4, a movable and fixed dual-purpose fire extinguisher comprises a movable fire extinguisher 1, a first delivery pipe 2 is communicated with the lower end of the movable fire extinguisher 1, and a second delivery pipe 3 is connected with the other end of the first delivery pipe 2 through a pipe butt joint mechanism;
the pipeline butt joint mechanism comprises a sleeve 4 and an insertion pipe 5, one end of the sleeve 4 is connected with a first conveying pipe 2, the insertion pipe 5 is connected with a second conveying pipe 3, the insertion pipe 5 is inserted in the sleeve 4, a sealing component is connected between the insertion pipe 5 and the sleeve 4, transmission grooves 6 are symmetrically formed in the inner wall of the sleeve 4, a spring 7 is fixedly connected to the bottom of each transmission groove 6, a transmission block 8 is fixedly connected to the other end of each spring 7, a clamping block 9 is fixedly connected to one end, far away from the spring 7, of each transmission block 8, a clamping groove 10 is formed in the outer wall of the insertion pipe 5, corresponding to the clamping block 9, matched with the clamping groove 10, one end, far away from the transmission block 8, of each transmission block 9 is inserted in the clamping groove 10, a pull rod 11 is fixedly connected to one end, far away from the clamping block 9, of each transmission block 8, a pull hole 12 is formed in, the spring 7 is sleeved on the rod wall of the pull rod 11, when the first conveying pipe 2 and the second conveying pipe 3 need to be butted, the sleeve 4 is held, outward pulling force is applied to the two pull rods 11 at the same time, the pull rods 11 are stressed and then drive the clamping blocks 9 to synchronously move through the transmission blocks 6, the clamping blocks 9 are retracted into the transmission grooves 6 and simultaneously compress the spring 7, the insertion pipe 5 connected with the second conveying pipe 3 is aligned with the sleeve 4 and inserted until the insertion pipe 5 is pushed to the limiting ring 25 and stops moving, then the two pull rods 12 are loosened, the compressed spring 7 pushes the transmission blocks 8 to reset, the clamping blocks are pushed out from the transmission grooves 6 of the clamping blocks 9, the clamping blocks 9 are pushed to the outer pipe wall of the insertion pipe 5, then the insertion pipe 5 is slowly rotated until the clamping grooves 10 on the insertion pipe 5 move to the positions corresponding to the clamping blocks 9, the spring 7 continues to push the transmission blocks 6 to move, and the clamping blocks 7 are inserted into, fix intubate 5 and sleeve pipe 4 together, convenient accomplish first conveyer pipe 2 and second conveyer pipe 3 and connect, whole manual operation can, need not to use the instrument to twist the nut, efficiency when having improved two conveyer pipe connections.
Seal assembly includes annular seal groove 13, and seal groove 13 is seted up on the inner tube wall of sleeve pipe 4, and seal groove 13 endotheca is equipped with sealing ring 14, and sealing ring 14's inner ring wall sets up on the outer tube wall of intubate 5, through sealing ring 14 in the seal groove 13 for when sleeve pipe 4 and intubate 5 are connected, guarantee the leakproofness between the two, prevent to leak.
Use intubate 5 to be the even equidistance of annular and seted up four rolling grooves 15 as the center on the interior pipe wall of first conveyer pipe 2 one end position is kept away from to sleeve pipe 4, be equipped with rolling ball 16 in the rolling groove 15, ball 16 passes the notch setting of rolling groove 15, and ball 16 rolling connection is on the outer pipe wall of intubate 5, when intubate 5 inserted in sleeve pipe 4, intubate 5 drives ball 16 and takes place to roll, the stability in intubate 5 inserted sleeve pipe 4 has been improved, the frictional resistance when intubate 5 moves in sleeve pipe 4 has been reduced simultaneously.
The both ends symmetry fixedly connected with slider 17 of transmission piece 8, the assorted spout 18 has been seted up to the position that corresponds slider 17 on the cell wall of transmission groove 6, and slider 17 sliding connection is in the spout 18 that corresponds, and the synchronous motion in spout 18 of transmission piece 17 drive during 8 movements of transmission piece prevents that transmission piece 8 from breaking away from in transmission groove 6.
The upper end of the movable fire extinguisher 1 is connected with a head 20, and a manual switch valve 21, a pressure gauge 22 and a spray pipe 23 are arranged on the head 20.
The axes of the pull rod 11, the spring 7 and the pull hole 12 are overlapped, one end of the pull rod 11 far away from the transmission block 8 is fixedly connected with a pull handle 24, and the pull handle 24 is held to drive the pull rod 11 to move synchronously.
The drive groove 6 is provided between the seal assembly and the ball 16 to prevent leakage between the sleeve 4 and the cannula 5.
The one end that the intubate 5 kept away from second conveyer pipe 3 is equipped with spacing ring 25, and spacing ring 25 fixed connection is on the interior pipe wall of sleeve pipe 4, and when intubate 5 inserted to sleeve pipe 4, stop motion behind the intubate 5 pushed up the spacing ring 25, carries on spacingly to the depth of insertion of intubate 5 in sleeve pipe 4.
In summary, according to the fire extinguisher with dual purposes of moving and fixing, when the first delivery pipe 2 and the second delivery pipe 3 need to be butted, the sleeve 4 is held, an outward pulling force is applied to the two pull rods 11 at the same time, the pull rods 11 are stressed and then drive the fixture blocks 9 to synchronously move through the transmission blocks 6, the fixture blocks 9 are retracted into the transmission grooves 6 and simultaneously compress the springs 7, the insertion pipe 5 connected with the second delivery pipe 3 is aligned with the sleeve 4 and inserted until the insertion pipe 5 pushes against the limiting ring 25 and stops moving, then the two pull rods 12 are loosened, the compressed springs 7 push the transmission blocks 8 to reset, the fixture blocks are pushed out from the transmission grooves 6 of the fixture blocks 9, so that the fixture blocks 9 push against the outer wall of the insertion pipe 5, then the insertion pipe 5 is slowly rotated until the clamping grooves 10 on the insertion pipe 5 move to the positions corresponding to the fixture blocks 9, the springs 7 continue to push the transmission blocks 6 to move, so that the fixture blocks 7 are, the cannula 5 and the sleeve 4 are fixed together, the first conveying pipe 2 and the second conveying pipe 3 are conveniently connected, the whole process is manually operated, a nut does not need to be screwed by using a tool, and the connecting efficiency of the two conveying pipes is improved; the sealing ring 14 in the sealing groove 13 ensures the sealing property between the sleeve 4 and the insert pipe 5 when the sleeve and the insert pipe are connected, thereby preventing leakage.
It is to be noted that the term "comprises," "comprising," or any other variation thereof is 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. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
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 (9)
1. A movable and fixed dual-purpose fire extinguisher comprises a movable fire extinguisher (1), and is characterized in that: the lower end of the mobile fire extinguisher (1) is communicated with a first conveying pipe (2), and the other end of the first conveying pipe (2) is connected with a second conveying pipe (3) through a pipeline butt joint mechanism;
the pipeline butt joint mechanism comprises a sleeve (4) and an insertion pipe (5), one end of the sleeve (4) is connected with a first conveying pipe (2), the insertion pipe (5) is connected with a second conveying pipe (3), the insertion pipe (5) is inserted into the sleeve (4), a sealing component is connected between the sleeve (4) and the insertion pipe (5), transmission grooves (6) are symmetrically formed in the inner wall of the sleeve (4), a spring (7) is fixedly connected to the bottom of each transmission groove (6), a transmission block (8) is fixedly connected to the other end of the spring (7), a clamping block (9) is fixedly connected to one end, far away from the spring (7), of each transmission block (8), a clamping groove (9) is formed in the position, corresponding to the clamping block (9), on the outer wall of the insertion pipe (5), of each clamping groove (10) is matched with the position, far away from the transmission block (8), of each clamping block (9) is inserted, one end fixedly connected with pull rod (11) of fixture block (9) is kept away from in transmission piece (8), trompil (12) have been seted up to the corresponding position of pull rod (11) of tank bottom in transmission groove (6), the one end that transmission piece (8) were kept away from in pull rod (11) passes spring (7) and trompil (12) in proper order and extends to sleeve pipe (4) outward, spring (7) cover is established on the pole wall of pull rod (11).
2. The fire extinguisher as claimed in claim 1, wherein: the sealing assembly comprises an annular sealing groove (13), the sealing groove (13) is formed in the inner pipe wall of the casing pipe (4), a sealing ring (14) is sleeved in the sealing groove (13), and the inner ring wall of the sealing ring (14) is arranged on the outer pipe wall of the insertion pipe (5).
3. The fire extinguisher as claimed in claim 1, wherein: the inner pipe wall of the sleeve (4) far away from one end of the first conveying pipe (2) is provided with four rolling grooves (15) which are uniformly and annularly arranged at equal intervals by taking the insertion pipe (5) as the center, rolling balls (16) are arranged in the rolling grooves (15), the balls (16) penetrate through notches of the rolling grooves (15), and the balls (16) are connected to the outer pipe wall of the insertion pipe (5) in a rolling mode.
4. The fire extinguisher as claimed in claim 1, wherein: the two ends of the transmission block (8) are symmetrically and fixedly connected with sliding blocks (17), the groove wall of the transmission groove (6) corresponding to the sliding blocks (17) is provided with matched sliding grooves (18), and the sliding blocks (17) are connected in the corresponding sliding grooves (18) in a sliding mode.
5. The fire extinguisher as claimed in claim 4, which is used for both moving and fixing, wherein: slide bar (19) are fixedly connected with in spout (18), assorted slide opening has been seted up to the position that slide bar (19) are corresponded in slider (17), slide bar (19) pass the slide opening setting, and slider (17) sliding connection is on the pole wall of slide bar (19).
6. The fire extinguisher as claimed in claim 1, wherein: the upper end of the movable fire extinguisher (1) is connected with a head (20), and the head (20) is provided with a manual switch valve (21), a pressure gauge (22) and a spray pipe (23).
7. The fire extinguisher as claimed in claim 1, wherein: the axes of the pull rod (11), the spring (7) and the pull hole (12) are overlapped, and one end, far away from the transmission block (8), of the pull rod (11) is fixedly connected with a pull handle (24).
8. A fire extinguisher for both moving and stationary according to claim 3, wherein: the transmission groove (6) is arranged between the sealing assembly and the ball (16).
9. The fire extinguisher as claimed in claim 1, wherein: one end of the insertion pipe (5) far away from the second conveying pipe (3) is provided with a limiting ring (25), and the limiting ring (25) is fixedly connected to the inner pipe wall of the casing pipe (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011222474.2A CN112337012A (en) | 2020-11-05 | 2020-11-05 | Remove and fixed dual-purpose fire extinguisher |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011222474.2A CN112337012A (en) | 2020-11-05 | 2020-11-05 | Remove and fixed dual-purpose fire extinguisher |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112337012A true CN112337012A (en) | 2021-02-09 |
Family
ID=74428323
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011222474.2A Pending CN112337012A (en) | 2020-11-05 | 2020-11-05 | Remove and fixed dual-purpose fire extinguisher |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112337012A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113616959A (en) * | 2021-10-12 | 2021-11-09 | 江苏惠众消防设备有限公司 | Fire extinguisher case with check fire extinguisher state function |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101513556A (en) * | 2009-03-31 | 2009-08-26 | 山西中远消防设备有限公司 | Portable/fixed dual-purpose fire extinguisher |
| CN109347338A (en) * | 2018-11-03 | 2019-02-15 | 赵洁 | A kind of inverter suitable under wet environment |
| CN209056683U (en) * | 2018-11-30 | 2019-07-02 | 河源市杰成五金有限公司 | A kind of connecting contact pin for electric appliance |
| CN210585458U (en) * | 2019-08-27 | 2020-05-22 | 佛山市南海区汉哲涂装技术有限公司 | Electrostatic spray gun with external charging point |
-
2020
- 2020-11-05 CN CN202011222474.2A patent/CN112337012A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101513556A (en) * | 2009-03-31 | 2009-08-26 | 山西中远消防设备有限公司 | Portable/fixed dual-purpose fire extinguisher |
| CN109347338A (en) * | 2018-11-03 | 2019-02-15 | 赵洁 | A kind of inverter suitable under wet environment |
| CN209056683U (en) * | 2018-11-30 | 2019-07-02 | 河源市杰成五金有限公司 | A kind of connecting contact pin for electric appliance |
| CN210585458U (en) * | 2019-08-27 | 2020-05-22 | 佛山市南海区汉哲涂装技术有限公司 | Electrostatic spray gun with external charging point |
Non-Patent Citations (1)
| Title |
|---|
| 李振文主编: "《机电工程》", 31 May 2014, 河南科学技术出版社 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113616959A (en) * | 2021-10-12 | 2021-11-09 | 江苏惠众消防设备有限公司 | Fire extinguisher case with check fire extinguisher state function |
| CN113616959B (en) * | 2021-10-12 | 2021-12-14 | 江苏惠众消防设备有限公司 | Fire extinguisher case with check fire extinguisher state function |
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Application publication date: 20210209 |