CN112337025A - Conveying equipment for conveying fire-fighting foam liquid - Google Patents
Conveying equipment for conveying fire-fighting foam liquid Download PDFInfo
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- CN112337025A CN112337025A CN202011222498.8A CN202011222498A CN112337025A CN 112337025 A CN112337025 A CN 112337025A CN 202011222498 A CN202011222498 A CN 202011222498A CN 112337025 A CN112337025 A CN 112337025A
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- pipe
- conveying
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- wall
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- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62C—FIRE-FIGHTING
- A62C31/00—Delivery of fire-extinguishing material
- A62C31/02—Nozzles specially adapted for fire-extinguishing
- A62C31/12—Nozzles specially adapted for fire-extinguishing for delivering foam or atomised foam
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- 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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- Public Health (AREA)
- Business, Economics & Management (AREA)
- Emergency Management (AREA)
- Fire-Extinguishing By Fire Departments, And Fire-Extinguishing Equipment And Control Thereof (AREA)
Abstract
The invention relates to the technical field of fire fighting equipment, and discloses a conveying device for conveying fire fighting foam liquid, which comprises a liquid storage cylinder, wherein the top of the liquid storage cylinder is fixedly communicated with a transition pipe, a matched L-shaped insertion pipe is inserted into the transition pipe, a first sealing ring matched with the transition pipe is fixedly sleeved on the outer pipe wall of the L-shaped insertion pipe, one end, far away from the transition pipe, of the L-shaped insertion pipe is fixedly communicated with an air inlet hose, the outer pipe wall, close to the top end, of the transition pipe is provided with an external thread, a rotary drum is sleeved on the transition pipe, the inner drum wall of the rotary drum is provided with an internal thread matched with the external thread, the rotary drum is in threaded connection with the transition pipe, the inner drum wall, close to the top end, of. This carry conveying equipment of fire control foam liquid makes things convenient for fire control foam liquid to carry fast to the storage tank of fire engine in, has avoided the artifical transport that wastes time and energy to effectively improve the transport efficiency of fire control foam liquid.
Description
Technical Field
The invention relates to the technical field of fire fighting equipment, in particular to conveying equipment for conveying fire fighting foam liquid.
Background
The fire-fighting foam liquid, also called aqueous film-forming foam extinguishing agent or light water foam extinguishing agent, is composed of fluorocarbon surfactant, fluorine-free surfactant, foam performance modifying additive, such as foam stabilizer, antifreeze, cosolvent, thickener and the like, and water. When the fire-fighting foam liquid and water are mixed by the proportional mixing device, a large amount of foam is generated, and the mixture is sprayed onto the burning oil surface by the spraying device, a water film with good sealing performance can be formed on the surface of the fuel by the moisture of foam chromatography, so that the fuel and air are isolated, and oil fire can be quickly and efficiently extinguished by means of the dual functions of the foam and the protective film. Is particularly suitable for fire fighting of oil storage equipment.
However, due to the characteristics of high viscosity, strong corrosivity and difficult transportation of the fire-fighting foam, when a fireman fills the fire-fighting vehicle with the fire-fighting foam, the fireman often needs to lift hundreds of jin of fire-fighting foam and a bucket onto the fire-fighting vehicle and then pour the fire-fighting foam into a storage tank of the fire-fighting vehicle; or the barreled foam liquid is poured into a larger container and then is lifted by a pump and poured into a fire engine through a hose. Both methods have the problems of high labor intensity, slow filling speed and influence on timely fire extinguishing of the fire truck.
Disclosure of Invention
Technical problem to be solved
Aiming at the defects of the prior art, the invention provides a conveying device for conveying fire-fighting foam liquid, which has the advantage of high conveying efficiency of the fire-fighting foam liquid and solves the problems of low filling efficiency of the fire-fighting foam liquid, time consumption and labor consumption in the prior art.
(II) technical scheme
In order to achieve the purpose of high conveying efficiency of the fire-fighting foam liquid, the invention provides the following technical scheme: a conveying device for conveying fire-fighting foam liquid comprises a liquid storage barrel, wherein a transition pipe is fixedly communicated with the top of the liquid storage barrel, a matched L-shaped insertion pipe is inserted into the transition pipe, a first sealing ring matched with the transition pipe is fixedly sleeved on the outer pipe wall of the L-shaped insertion pipe, one end, far away from the transition pipe, of the L-shaped insertion pipe is fixedly communicated with an air inlet hose, an outer pipe wall, close to the top end, of the transition pipe is provided with an external thread, a rotary drum is sleeved on the transition pipe, an inner pipe wall of the rotary drum is provided with an internal thread matched with the external thread, the rotary drum is in threaded connection with the transition pipe, a matched ball bearing is fixedly installed on the inner drum wall, close to the top end, of the rotary drum, the L-shaped insertion pipe penetrates through the ball bearing, the outer pipe wall of the L-shaped insertion pipe is fixedly connected with, the jack has been seted up at the top of stock solution section of thick bamboo, and the jack interpolation is equipped with the transfer line of matching, the bottom of transfer line extends to stock solution bobbin base portion, fixed cup joint on the outer pipe wall of transfer line have with jack assorted second sealing washer, the slip cap is equipped with the lantern ring of matching on the transfer line, symmetry fixedly connected with L type pole on the outer lane lateral wall of the lantern ring, the top fixedly connected with and the corresponding dead lever of L type pole of stock solution section of thick bamboo, the butt joint piece of the equal fixedly connected with halfcylinder structure of the end in opposite directions of L type pole and dead lever, and two butt joint pieces set up, two of laminating each other the outside of butt joint piece all is equipped with the external screw thread, and the common cover in outside of two butt joint pieces is equipped with the screw sleeve of matching, screw.
Preferably, the anti-loosening mechanism for positioning comprises an L-shaped plate fixedly connected to the outer pipe wall of the transition pipe, a pull rod penetrates through the vertical portion of the L-shaped plate in a sliding mode, a positioning hole matched with the pull rod is formed in the outer cylinder wall of the rotary drum, one end of the pull rod is inserted into the positioning hole, a retaining ring is fixedly sleeved on the pull rod, a first spring is fixedly connected between the retaining ring and the L-shaped plate, and the first spring is sleeved on the pull rod.
Preferably, the fixed cover of fixed cover has connect the elastic sealing ring on the outer pipe wall of transfer line, and the lower surface of elastic sealing ring and the top of liquid storage cylinder laminate the setting each other, the last fixed surface of elastic sealing ring is connected with the second spring, and the second spring cover sets up on the transfer line, the other end of second spring and the lower fixed surface of the lantern ring are connected.
Preferably, the outer pipe wall of the transition pipe is fixedly connected with a stop block, and the upper surface of the stop block is attached to the bottom edge of the rotary drum.
Preferably, the bottom end orifice of the infusion tube is obliquely arranged.
Preferably, the outer cylinder walls of the rotating cylinder and the threaded sleeve are provided with anti-skid threads which are uniformly distributed.
Preferably, one end of the pull rod, which is far away from the positioning hole, is fixedly provided with a pull ring.
(III) advantageous effects
Compared with the prior art, the invention provides a conveying device for conveying fire-fighting foam liquid, which has the following beneficial effects:
1. the conveying equipment for conveying the fire-fighting foam liquid is characterized in that the L-shaped insertion pipe is inserted into the transition pipe by arranging the liquid storage cylinder, the transition pipe, the L-shaped insertion pipe, the first sealing ring, the air inlet hose, the rotary cylinder, the ball bearing, the liquid conveying pipe, the second sealing ring, the lantern ring, the L-shaped rod, the fixed rod, the butt joint block and the threaded sleeve, the first sealing ring can ensure the air tightness of splicing, the rotary cylinder is rotated to be in threaded connection with the transition pipe, the rotary cylinder is rotated to conveniently drive the L-shaped insertion pipe to be inserted into the transition pipe to complete butt joint through the ball bearing in the rotating process, the liquid conveying pipe penetrates through the jack at the top of the liquid storage cylinder, the second sealing ring can ensure the tightness between the liquid conveying pipe and the jack, the L-shaped rod on the side wall of the lantern ring corresponds to the fixed rod at the top of the liquid storage cylinder, the butt joint block at the, can accomplish the installation of transfer line fast, be connected intake hose with external air pump, start the air pump and conveniently pressurize in to the liquid storage cylinder, fire control foam liquid in the liquid storage cylinder will be discharged via the transfer line under the pressure effect to make things convenient for fire control foam liquid to carry fast to the storage tank of fire engine in, avoided the artifical transport of wasting time and energy, effectively improve the transport efficiency of fire control foam liquid.
2. This carry conveying equipment of fire control foam concentrate, through setting up L template, pull rod, fender ring and first spring, the pulling pull rod can drive and keep off the first spring of ring compression, accomplishes the installation back when rotary drum and transition pipe, loosens the pull rod, and first spring drives the pull rod and resets, makes the locating hole grafting on pull rod and the rotary drum lateral wall to the convenient rotation degree of freedom to the rotary drum locks, avoids the rotary drum to take place not hard up, thereby effectively guarantees the stability of installation.
Drawings
FIG. 1 is a schematic structural diagram of a conveying apparatus for conveying fire-fighting foam liquid 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. 2.
In the figure: the automatic liquid storage device comprises a liquid storage cylinder 1, a transition pipe 2, a 3L-shaped insertion pipe, a 4 first sealing ring, a 5 air inlet hose, a 6 rotary cylinder, a 7 ball bearing, an 8 liquid conveying pipe, a 9 second sealing ring, a 10 lantern ring, a 11L-shaped rod, a 12 fixing rod, a 13 butt joint block, a 14 threaded sleeve, a 15L-shaped plate, a 16 pull rod, a 17 baffle ring, a 18 first spring, a 19 elastic sealing ring, a 20 second spring, a 21 baffle block and a 22 pull ring.
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 conveying apparatus for conveying fire-fighting foam liquid comprises a liquid storage barrel 1, a transition pipe 2 is fixedly communicated with the top of the liquid storage barrel 1, a matched L-shaped insertion pipe 3 is inserted into the transition pipe 2, a first sealing ring 4 matched with the transition pipe 2 is fixedly sleeved on the outer wall of the L-shaped insertion pipe 3, an air inlet hose 5 is fixedly communicated with one end of the L-shaped insertion pipe 3 far away from the transition pipe 2, an external thread is arranged on the outer wall of the transition pipe 2 close to the top end, a rotary drum 6 is sleeved on the transition pipe 2, an internal thread matched with the external thread is arranged on the inner wall of the rotary drum 6, the rotary drum 6 is in threaded connection with the transition pipe 2, a matched ball bearing 7 is fixedly arranged on the inner wall of the rotary drum 6 close to the top end, the L-shaped insertion pipe 3 passes through the ball bearing 7, the outer wall of the L-shaped insertion pipe 3 is fixedly connected with the inner ring of the, the top of the liquid storage cylinder 1 is provided with a jack, a matched infusion tube 8 is inserted into the jack, the bottom end of the infusion tube 8 extends to the bottom of the liquid storage cylinder 1, a second sealing ring 9 matched with the jack is fixedly sleeved on the outer tube wall of the infusion tube 8, a matched lantern ring 10 is slidably sleeved on the infusion tube 8, L-shaped rods 11 are symmetrically and fixedly connected on the outer ring side wall of the lantern ring 10, a fixed rod 12 corresponding to the L-shaped rod 11 is fixedly connected on the top of the liquid storage cylinder 1, opposite ends of the L-shaped rod 11 and the fixed rod 12 are fixedly connected with butt-joint blocks 13 of a semi-cylinder structure, the two butt-joint blocks 13 are mutually attached, outer sides of the two butt-joint blocks 13 are respectively provided with external threads, matched threaded sleeves 14 are jointly sleeved on the outer sides of the two butt-joint blocks 13, the threaded sleeves 14 are jointly in threaded connection with the two butt-joint blocks 13, the L-shaped insertion tube 3, the rotary drum 6 is rotated to be in threaded connection with the transition pipe 2, the rotary drum 6 is conveniently driven to insert the L-shaped insertion pipe 3 into the transition pipe 2 through the ball bearing 7 to complete butt joint in the rotating process, the infusion pipe 8 penetrates through the jack at the top of the liquid storage cylinder 1, the sealing performance between the infusion pipe 8 and the jack can be guaranteed through the second sealing ring 9, the L-shaped rod 11 on the side wall of the lantern ring 10 corresponds to the fixed rod 12 at the top of the liquid storage cylinder 1, meanwhile, the butt joint block 13 at the end part of the L-shaped rod 11 is mutually attached to the butt joint block 13 at the end part of the fixed rod 12, the threaded sleeve 14 is rotated to be in threaded connection with the two attached butt joint blocks 13 together, the installation of the infusion pipe 8 can be rapidly completed, the air inlet hose 5 is connected with an external air pump, the air pump is started to conveniently pressurize the liquid storage cylinder 1, the fire foam liquid in the liquid storage cylinder 1 is discharged through the fire foam, avoid the artifical transport that wastes time and energy, effectively improved the conveying efficiency of fire control foam liquid.
The anti-loosening positioning mechanism comprises an L-shaped plate 15 fixedly connected to the outer pipe wall of the transition pipe 2, a pull rod 16 is arranged at the vertical portion of the L-shaped plate 15 in a sliding penetrating mode, a positioning hole matched with the pull rod 16 is formed in the outer pipe wall of the rotary drum 6, one end of the pull rod 16 is arranged in a plugging mode with the positioning hole, a baffle ring 17 is fixedly sleeved on the pull rod 16, a first spring 18 is fixedly connected between the baffle ring 17 and the L-shaped plate 15, the first spring 18 is sleeved on the pull rod 16, the pull rod 16 can drive the baffle ring 17 to compress the first spring 18, after the rotary drum 6 and the transition pipe 2 are installed, the pull rod 16 is loosened, the first spring 18 drives the pull rod 16 to reset, the pull rod 16 is connected with the positioning hole in the side wall of the rotary drum 6 in a plugging mode, the rotational freedom degree of the rotary drum 6 is conveniently locked, the rotary.
Fixed sleeve joint has elastic sealing ring 19 on 8's the outer pipe wall of transfer line, and elastic sealing ring 19's lower surface and the top of liquid storage cylinder 1 laminate the setting each other, elastic sealing ring 19's last fixed surface is connected with second spring 20, and second spring 20 cover is established and is set up on transfer line 8, second spring 20's the other end and the lower fixed surface of the lantern ring 10 are connected, lantern ring 10 accomplishes installation back second spring 20 with dead lever 12 and is in compression state, the tension that second spring 20 produced acts on elastic sealing ring 19, thereby make elastic sealing ring 19 can closely plug up the jack, further improve sealed effect.
Fixedly connected with dog 21 on the outer pipe wall of transition pipe 2, and the top surface of dog 21 and the bottom edgewise laminating setting of rotary drum 6, accomplish the installation when rotary drum 6 contradicts with dog 21 to conveniently install the location.
The bottom end pipe orifice of the transfusion pipe 8 is obliquely arranged, so that the fire-fighting foam liquid is conveniently conveyed.
The outer cylinder walls of the rotary cylinder 6 and the threaded sleeve 14 are both provided with anti-skid lines which are uniformly distributed, so that the adhesive force of hands is increased, the rotation of the rotary cylinder 6 and the threaded sleeve 14 is conveniently controlled,
and a pull ring 22 is fixedly arranged at one end of the pull rod 16 far away from the positioning hole, so that the pull rod 16 can be conveniently pulled to slide.
In conclusion, according to the conveying equipment for conveying the fire-fighting foam liquid, the L-shaped insertion tube 3 is inserted into the transition tube 2, the first sealing ring 4 can ensure the air tightness of insertion, the rotary drum 6 is rotated to be in threaded connection with the transition tube 2, the rotary drum 6 is conveniently driven to be inserted into the transition tube 2 to complete butt joint through the ball bearing 7 in the rotation process, the liquid conveying tube 8 passes through the jack at the top of the liquid storage cylinder 1, the second sealing ring 9 can ensure the sealing property between the liquid conveying tube 8 and the jack, the L-shaped rod 11 on the side wall of the lantern ring 10 corresponds to the fixed rod 12 at the top of the liquid storage cylinder 1, meanwhile, the butt joint block 13 at the end part of the L-shaped rod 11 is mutually jointed with the butt joint block 13 at the end part of the fixed rod 12, the threaded sleeve 14 is rotated to be in threaded connection with the two jointed butt joint blocks 13 together, so that the installation of, the air pump is started to conveniently pressurize the liquid storage cylinder 1, and the fire-fighting foam liquid in the liquid storage cylinder 1 is discharged through the liquid conveying pipe 8 under the action of pressure, so that the fire-fighting foam liquid is conveniently and quickly conveyed into the storage tank of the fire truck, the manual carrying which is time-consuming and labor-consuming is avoided, and the conveying efficiency of the fire-fighting foam liquid is effectively improved; the pulling pull rod 16 can drive the baffle ring 17 to compress the first spring 18, after the installation of the rotary drum 6 and the transition pipe 2 is completed, the pull rod 16 is loosened, the first spring 18 drives the pull rod 16 to reset, the pull rod 16 is inserted into the positioning hole in the side wall of the rotary drum 6, the rotary freedom degree of the rotary drum 6 is conveniently locked, the rotary drum 6 is prevented from loosening, and the installation stability is effectively guaranteed.
It is to be noted that 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. 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 (7)
1. The utility model provides a conveying equipment of transport fire control foam concentrate, includes liquid storage cylinder (1), its characterized in that: the top of the liquid storage cylinder (1) is fixedly communicated with a transition pipe (2), a matched L-shaped insertion pipe (3) is inserted into the transition pipe (2), a first sealing ring (4) matched with the transition pipe (2) is fixedly sleeved on the outer pipe wall of the L-shaped insertion pipe (3), one end, far away from the transition pipe (2), of the L-shaped insertion pipe (3) is fixedly communicated with an air inlet hose (5), an external thread is arranged on the outer pipe wall, close to the top end, of the transition pipe (2), a rotary drum (6) is sleeved on the transition pipe (2), an internal thread matched with the external thread is arranged on the inner cylinder wall of the rotary drum (6), the rotary drum (6) is in threaded connection with the transition pipe (2), a matched ball bearing (7) is fixedly arranged on the inner cylinder wall, close to the top end, of the rotary drum (6), the L-shaped insertion pipe (3) penetrates through the ball bearing (7), and the outer pipe wall of the L-shaped insertion pipe (3) is, install the locking mechanism that moves in location between rotary drum (6) and transition pipe (2), the jack has been seted up at the top of liquid storage cylinder (1), and the jack interpolation is equipped with assorted transfer line (8), the bottom of transfer line (8) extends to liquid storage cylinder (1) bottom, fixed cover on the outer pipe wall of transfer line (8) has connect with jack assorted second sealing washer (9), sliding sleeve is equipped with assorted lantern ring (10) on transfer line (8), symmetry fixedly connected with L type pole (11) on the outer lane lateral wall of lantern ring (10), the top fixedly connected with of liquid storage cylinder (1) and L type pole (11) corresponding dead lever (12), the equal fixedly connected with butt joint piece (13) of half cylinder structure of the end in opposite directions of L type pole (11) and dead lever (12), and two butt joint pieces (13) set up of laminating each other, the outer sides of the butt joint blocks (13) are provided with external threads, the outer sides of the two butt joint blocks (13) are jointly sleeved with matched threaded sleeves (14), and the threaded sleeves (14) are in threaded connection with the two butt joint blocks (13) jointly.
2. A conveying apparatus for conveying fire fighting foam concentrate according to claim 1, characterized in that: the anti-loosening mechanism for the positioning comprises an L-shaped plate (15) fixedly connected to the outer wall of the transition pipe (2), a pull rod (16) penetrates through the vertical portion of the L-shaped plate (15) in a sliding mode, a positioning hole matched with the pull rod (16) is formed in the outer cylinder wall of the rotary drum (6), one end of the pull rod (16) is arranged in an inserting mode with the positioning hole, a blocking ring (17) is fixedly sleeved on the pull rod (16), a first spring (18) is fixedly connected between the blocking ring (17) and the L-shaped plate (15), and the first spring (18) is arranged on the pull rod (16) in a sleeved mode.
3. A conveying apparatus for conveying fire fighting foam concentrate according to claim 1, characterized in that: the fixed cover has connect elastic sealing ring (19) on the outer pipe wall of transfer line (8), and the lower surface of elastic sealing ring (19) and the top of liquid storage cylinder (1) laminate the setting each other, the last fixed surface of elastic sealing ring (19) is connected with second spring (20), and second spring (20) cover establishes and sets up on transfer line (8), the other end of second spring (20) and the lower fixed surface of the lantern ring (10) are connected.
4. A conveying apparatus for conveying fire fighting foam concentrate according to claim 1, characterized in that: the outer pipe wall of the transition pipe (2) is fixedly connected with a stop block (21), and the upper surface of the stop block (21) is attached to the bottom edge of the rotary drum (6).
5. A conveying apparatus for conveying fire fighting foam concentrate according to claim 1, characterized in that: the bottom end orifice of the infusion tube (8) is obliquely arranged.
6. A conveying apparatus for conveying fire fighting foam concentrate according to claim 1, characterized in that: the outer cylinder walls of the rotary cylinder (6) and the threaded sleeve (14) are provided with anti-skid lines which are uniformly distributed.
7. A conveying apparatus for conveying fire fighting foam concentrate according to claim 2, characterized in that: and a pull ring (22) is fixedly arranged at one end of the pull rod (16) far away from the positioning hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011222498.8A CN112337025A (en) | 2020-11-05 | 2020-11-05 | Conveying equipment for conveying fire-fighting foam liquid |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011222498.8A CN112337025A (en) | 2020-11-05 | 2020-11-05 | Conveying equipment for conveying fire-fighting foam liquid |
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| Publication Number | Publication Date |
|---|---|
| CN112337025A true CN112337025A (en) | 2021-02-09 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011222498.8A Pending CN112337025A (en) | 2020-11-05 | 2020-11-05 | Conveying equipment for conveying fire-fighting foam liquid |
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| CN (1) | CN112337025A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114171305A (en) * | 2021-12-10 | 2022-03-11 | 天威保变(合肥)变压器有限公司 | Method for recovering transformer oil in oil chamber of on-load switch |
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| CN106310574A (en) * | 2016-08-31 | 2017-01-11 | 大庆市让胡路区昊淼消防设备制造有限责任公司 | Device used for conveying fire fighting foam liquid |
| CN208535381U (en) * | 2018-07-11 | 2019-02-22 | 新昌县嘉翔电子科技有限公司 | A kind of natural gas exploration conveyance conduit fast joint structure |
| CN111846236A (en) * | 2020-07-14 | 2020-10-30 | 马鞍山天顺农业科技有限公司 | Pesticide sprays uses solar energy unmanned aerial vehicle |
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2020
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| CN202629410U (en) * | 2012-06-13 | 2012-12-26 | 智胜化工股份有限公司 | Unidirectional gas-liquid straight through type rotary joint device |
| CN106310574A (en) * | 2016-08-31 | 2017-01-11 | 大庆市让胡路区昊淼消防设备制造有限责任公司 | Device used for conveying fire fighting foam liquid |
| CN208535381U (en) * | 2018-07-11 | 2019-02-22 | 新昌县嘉翔电子科技有限公司 | A kind of natural gas exploration conveyance conduit fast joint structure |
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| CN114171305A (en) * | 2021-12-10 | 2022-03-11 | 天威保变(合肥)变压器有限公司 | Method for recovering transformer oil in oil chamber of on-load switch |
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Application publication date: 20210209 |
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