CN117505156A - Automatic spraying device for inner wall of fire-fighting pipe fitting and application method of automatic spraying device - Google Patents
Automatic spraying device for inner wall of fire-fighting pipe fitting and application method of automatic spraying device Download PDFInfo
- Publication number
- CN117505156A CN117505156A CN202410012453.XA CN202410012453A CN117505156A CN 117505156 A CN117505156 A CN 117505156A CN 202410012453 A CN202410012453 A CN 202410012453A CN 117505156 A CN117505156 A CN 117505156A
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- Prior art keywords
- fire
- pipe fitting
- sleeve
- fixedly connected
- wall
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- 238000005507 spraying Methods 0.000 title claims abstract description 118
- 238000000034 method Methods 0.000 title claims abstract description 9
- 239000007921 spray Substances 0.000 claims abstract description 81
- 239000003973 paint Substances 0.000 claims abstract description 46
- 238000001035 drying Methods 0.000 claims abstract description 29
- 238000002347 injection Methods 0.000 claims abstract description 21
- 239000007924 injection Substances 0.000 claims abstract description 21
- 238000004891 communication Methods 0.000 claims abstract description 15
- 230000005540 biological transmission Effects 0.000 claims abstract description 4
- 238000009434 installation Methods 0.000 claims description 49
- 238000005096 rolling process Methods 0.000 claims description 25
- 238000001125 extrusion Methods 0.000 claims description 6
- 230000000694 effects Effects 0.000 claims description 4
- 241000883990 Flabellum Species 0.000 claims description 2
- 238000000861 blow drying Methods 0.000 abstract description 2
- 230000001681 protective effect Effects 0.000 description 13
- 235000017166 Bambusa arundinacea Nutrition 0.000 description 6
- 235000017491 Bambusa tulda Nutrition 0.000 description 6
- 241001330002 Bambuseae Species 0.000 description 6
- 235000015334 Phyllostachys viridis Nutrition 0.000 description 6
- 239000011425 bamboo Substances 0.000 description 6
- 239000011248 coating agent Substances 0.000 description 3
- 238000000576 coating method Methods 0.000 description 3
- 238000003754 machining Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B16/00—Spray booths
- B05B16/20—Arrangements for spraying in combination with other operations, e.g. drying; Arrangements enabling a combination of spraying operations
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B13/00—Machines or plants for applying liquids or other fluent materials to surfaces of objects or other work by spraying, not covered by groups B05B1/00 - B05B11/00
- B05B13/06—Machines or plants for applying liquids or other fluent materials to surfaces of objects or other work by spraying, not covered by groups B05B1/00 - B05B11/00 specially designed for treating the inside of hollow bodies
- B05B13/0645—Machines or plants for applying liquids or other fluent materials to surfaces of objects or other work by spraying, not covered by groups B05B1/00 - B05B11/00 specially designed for treating the inside of hollow bodies the hollow bodies being rotated during treatment operation
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D3/00—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials
- B05D3/04—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials by exposure to gases
- B05D3/0406—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials by exposure to gases the gas being air
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/10—Greenhouse gas [GHG] capture, material saving, heat recovery or other energy efficient measures, e.g. motor control, characterised by manufacturing processes, e.g. for rolling metal or metal working
Landscapes
- Nozzles (AREA)
Abstract
The invention discloses an automatic spraying device for the inner wall of a fire-fighting pipe fitting and a use method thereof, and provides a scheme that the automatic spraying device comprises a mounting sleeve and a fire-fighting pipe fitting, and is characterized in that a spraying structure and a drying structure are mounted on the mounting sleeve, a driving structure for driving the spraying structure and the drying structure to rotate is mounted in the mounting sleeve, and an air injection structure is mounted on the mounting sleeve; according to the invention, through arranging the spraying structure, the drying structure, the driving structure and the air spraying structure, the spray nozzle can perform comprehensive and uniform spraying treatment on the inner wall of the fire-fighting pipe fitting, the quality of the processed fire-fighting pipe fitting is ensured, and when the rotating shaft drives the fan blade to rotate, air flow is transmitted into the second communication sleeve through the air transmission pipe, so that all the air spraying covers can perform blow-drying treatment on paint in the fire-fighting pipe fitting just after the spray nozzle finishes, the drying speed of the paint in the fire-fighting pipe fitting is improved, and the processing efficiency is ensured.
Description
Technical Field
The invention relates to the technical field of spraying devices, in particular to an automatic spraying device for the inner wall of a fire-fighting pipe fitting and a use method thereof.
Background
Fire-fighting pipe means a piping material for connecting fire-fighting equipment, and delivering water, gas or other medium for fire-fighting. Because special requirements are met on the thickness and the material of the fire-fighting pipe fitting, and because the fire-fighting pipe fitting is made of metal, the fire-fighting pipe fitting is easy to corrode in the process of conveying fire-fighting water, if the fire-fighting pipe fitting is not properly treated, the steel pipe is easy to be corroded and damaged, and red paint needs to be sprayed in the fire-fighting pipe fitting when the fire-fighting pipe fitting is processed and manufactured, so that the strength of the fire-fighting pipe fitting is maintained, and the fire-fighting pipe fitting has a good application range.
At present, processing is being carried out to fire-fighting pipe fitting in the market, when carrying out the spraying to its inside, most carry out the paint spraying operation by manual hand-held paint spray gun to fire-fighting pipe fitting inner wall, fire-fighting pipe fitting inner operation belongs to restricted space operation, the factor of safety risk is higher, manual hand-held paint spray gun sprays, paint passes through the nozzle blowout, thereby carry out the spraying to fire-fighting pipe fitting inner wall and handle, but paint thickness is not good control, and be difficult to guarantee to evenly comprehensive spraying to fire-fighting pipe fitting inside with the paint, thereby influence the fire-fighting pipe fitting quality of processing, and after the operating personnel carries out the paint spraying to fire-fighting pipe fitting inner wall, mostly directly place fire-fighting pipe fitting, make the inside paint after the spraying of fire-fighting pipe fitting automatic air-dry processing, because the ventilation of fire-fighting pipe fitting inside is relatively poor, thereby lead to fire-fighting pipe fitting inside paint's drying rate, thereby influence machining efficiency. Aiming at the problems, the invention provides an automatic spraying device for the inner wall of a fire-fighting pipe fitting and a using method thereof.
Disclosure of Invention
The invention aims to solve the defects in the prior art, and provides an automatic spraying device for the inner wall of a fire-fighting pipe, which can perform comprehensive and uniform spraying treatment on the inner wall of the fire-fighting pipe, ensure the quality of the processed fire-fighting pipe, blow-dry the paint in the fire-fighting pipe just after the spraying of a nozzle is finished, improve the drying speed of the paint in the fire-fighting pipe, and ensure the processing efficiency, and a use method thereof.
In order to achieve the above purpose, the present invention adopts the following technical scheme:
the automatic spraying device for the inner wall of the fire-fighting pipe fitting comprises a mounting sleeve and the fire-fighting pipe fitting and is characterized in that a spraying structure and a drying structure are mounted on the mounting sleeve, a driving structure for driving the spraying structure and the drying structure to rotate is mounted in the mounting sleeve, an air injection structure is mounted on the mounting sleeve, the air injection structure and the drying structure are mutually matched to dry the inner wall of the fire-fighting pipe fitting, a rolling structure is arranged at one end, far away from the spraying structure, of the surface of the mounting sleeve, an adjusting structure for adjusting the self posture is arranged on the rolling structure, an elastic structure is arranged in the rolling structure, and the mounting sleeve is positioned in the fire-fighting pipe fitting;
the spraying structure comprises a first connecting sleeve, the first connecting sleeve is fixedly connected inside a mounting sleeve, a spray pipe is connected to the first connecting sleeve in a rotating mode, a plurality of nozzles are fixedly connected to the spray pipe, the drying structure comprises a second communicating sleeve, the second communicating sleeve is fixedly connected inside the mounting sleeve, an air outlet pipe is connected to the second communicating sleeve in a rotating mode, a plurality of air spraying covers are mounted on the air outlet pipe, the air spraying structure comprises two mounting covers, two mounting covers are fixedly connected to the mounting sleeve, a rotating shaft is connected to the mounting covers in a rotating mode, fan blades are fixedly connected to the rotating shaft, air conveying pipes are fixedly connected to the mounting covers, the two mounting covers are mutually communicated with the second communicating sleeve through the air conveying pipes, and the driving structure drives the spray pipe, the air outlet pipe and the two rotating shafts to rotate.
Preferably, the spray pipe is fixedly connected with the air outlet pipe, and the spray pipe is rotationally connected with the mounting sleeve.
Preferably, the first connection sleeve is communicated with all nozzles through a spray pipe, and the first connection sleeve is communicated with the paint sprayer through a conduit.
Preferably, the driving structure comprises a fixing plate, the fixing plate is fixedly connected inside the mounting sleeve, a driving motor is mounted on the fixing plate, the output end of the driving motor is fixedly connected with a rotating shaft, the rotating shaft is fixedly connected with the air outlet pipe, a driving gear is fixedly connected to the rotating shaft, two driven gears are meshed on the driving gear, and the driven gears are fixedly connected with a rotating shaft which is close to the driving gear.
Preferably, the mounting sleeve is fixedly connected with two protective covers, the driven gear is positioned in the protective covers, and the diameter of the driven gear is smaller than that of the driving gear.
Preferably, the rolling structure comprises a mounting base, the one end that nozzle was kept away from on mounting base fixedly connected with in the installation sleeve surface, radial fixedly connected with a plurality of first telescopic links of group on the mounting base, two of same group fixedly connected with one and the same mounting panel on the first telescopic link, fixedly connected with two sets of risers on the mounting panel, sliding connection has the movable block on the riser, two that are close to rotate on the movable block and be connected with the live-rollers, fixedly connected with gyro wheel on the live-rollers, all the gyro wheel is closely laminated with fire control pipe fitting.
Preferably, the adjusting structure comprises a threaded rod, the threaded rod is fixedly connected to one side, far away from the installation sleeve, of the surface of the installation base, a threaded cylinder is connected to the threaded rod in a threaded mode, a rotating base is connected to the threaded cylinder in a rotating mode, a plurality of pushing plates are connected to the rotating base in a rotating mode, and one end, far away from the rotating base, of each pushing plate is connected with a close installation plate in a rotating mode.
Preferably, the screw thread section of thick bamboo is last fixedly connected with rolling disc, rolling disc surface fixedly connected with a plurality of rotation handle, the threaded rod runs through the rolling disc.
Preferably, the elastic structure comprises a second telescopic rod, a plurality of the second telescopic rods are fixedly connected to the surface of the vertical plate, one end, far away from the vertical plate, of the second telescopic rod is fixedly connected with the movable block, a spring is sleeved on the outer wall of the second telescopic rod, one end of the spring is fixedly connected with the vertical plate, the other end of the spring is fixedly connected with the movable block, and the section shape of the movable block is shaped like a T.
The application method of the automatic spraying device for the inner wall of the fire-fighting pipe fitting comprises the following steps:
s1, when an operator needs to use the spraying device to spray the inside of a fire-fighting pipe fitting, firstly, the installation sleeve is placed inside the fire-fighting pipe fitting, the operator rotates the rotating disc, the rotating disc drives the threaded cylinder to rotate, the threaded cylinder is in threaded connection with the threaded rod, the rotating disc can drive the threaded cylinder to move close to or far away from the installation sleeve on the surface of the threaded rod, and the rotating base is in rotational connection with the threaded cylinder, so that the threaded cylinder can push all the installation plates to move close to or far away from each other through all the pushing plates, and all the rollers can move to be closely attached to the inner wall of the fire-fighting pipe fitting;
s2, after an operator places the spraying device in a fire-fighting pipe fitting, a driving motor drives an air outlet pipe and a spray pipe to rotate through a rotating shaft, paint enters the first connecting sleeve through a paint spraying machine and a guide pipe, the paint is sprayed out of a plurality of nozzles on the spray pipe due to the mutual communication of the first connecting sleeve and the spray pipe, and the paint is sprayed onto the inner wall of the fire-fighting pipe fitting, and the spray pipe drives the plurality of nozzles to rotate, so that the nozzles can comprehensively spray the inner wall of the fire-fighting pipe fitting;
s3, the driving motor drives the spray pipe and the air outlet pipe to rotate through the rotating shaft, and simultaneously drives the driving gear to rotate, and because the diameter of the driving gear is larger than that of the driven gear, the driving motor can drive the two rotating shafts to rotate rapidly, the rotating shafts drive the fan blades to rotate to generate air flow, the air flow is transmitted into the second communication sleeve through the air transmission pipe, and the second communication sleeve is communicated with all the air injection covers through the air outlet pipe, so that all the air injection covers can blow-dry paint in the fire-fighting pipe immediately after the spraying of the spray nozzle is finished;
s4, when operating personnel pulls the installation sleeve, make the installation sleeve remove inside fire control pipe fitting, thereby make the nozzle carry out spraying treatment to inside fire control pipe fitting, if fire control pipe fitting inner wall has the arch, when causing the hindrance to the gyro wheel, the gyro wheel that corresponds receives the hindrance, can do the motion that is close to the mounting base, the gyro wheel passes through the live-rollers and two movable block extrusion second telescopic links and springs, thereby make this spraying device can normally remove inside fire control pipe fitting, spray treatment to fire control pipe fitting inner wall, after the gyro wheel passes through the arch, remove the protruding extrusion back that receives, under the effect of second telescopic link and spring, make the gyro wheel automatic normal position that resumes.
Compared with the prior art, the invention provides an automatic spraying device for the inner wall of a fire-fighting pipe fitting, which has the following beneficial effects:
1. this automatic spraying device of fire control pipe fitting inner wall through setting up spraying structure, drying structure, actuating structure and jet structure, operating personnel places this spraying device inside the fire control pipe fitting, actuating motor drives outlet duct and spray tube through the axis of rotation and rotates, paint enters into inside the first connection sleeve through coating flush coater and pipe, thereby make the nozzle can carry out comprehensive even spraying to the fire control pipe fitting inner wall, guarantee the fire control pipe fitting quality of processing out, actuating motor drives spray tube and outlet duct through the axis of rotation and rotates, drive the driving gear and rotate, because the diameter of driving gear is greater than driven gear's diameter, make actuating motor can drive two rotation axes and carry out fast rotation, the axis of rotation drives the flabellum when rotating, convey inside the second intercommunication sleeve through the gas-supply pipe, because the second intercommunication sleeve communicates each other with all jet hoods through the outlet duct, thereby make all jet hoods can blow dry the inside paint of fire control pipe fitting just after the spraying, improve the drying rate of the inside paint of fire control pipe fitting, guarantee machining efficiency.
2. This automatic spraying device of fire control pipe fitting inner wall through setting up adjusting structure and rolling structure, when operating personnel uses this spraying device to carry out spraying treatment to fire control pipe fitting inner wall, place the installation sleeve inside the fire control pipe fitting earlier, operating personnel rotation rolling disc, the rolling disc drives the screw thread section of thick bamboo and rotates, because screw thread section of thick bamboo and threaded rod threaded connection, make the rolling disc can drive the screw thread section of thick bamboo and be close to the installation sleeve or keep away from the motion of installation sleeve at the threaded rod surface, and because swivel base is connected with screw thread section of thick bamboo rotation, make the screw thread section of thick bamboo can promote all mounting panels to be the motion that is close to each other or keep away from each other through all push plates, thereby make all gyro wheels can remove to closely laminate with fire control pipe fitting inner wall, thereby make this spraying device carry out spraying processing to fire control pipe fitting of different diameters, improve this spraying device's suitability.
3. This automatic spraying device of fire control pipe fitting inner wall is through setting up elastic construction, when operating personnel pulls the installation sleeve, make the installation sleeve remove inside fire control pipe fitting, thereby make the nozzle when carrying out spraying treatment to the inside fire control pipe fitting, if fire control pipe fitting inner wall exists the arch, when obstructing the gyro wheel, the gyro wheel that corresponds receives, can do the motion that is close to the mounting base, the gyro wheel extrudees second telescopic link and spring through live-rollers and two movable blocks, after the gyro wheel removes suitable position, remove the protruding extrusion that receives, under the effect of second telescopic link and spring, make the gyro wheel automatic normal position that resumes, thereby make this spraying device can normally remove inside fire control pipe fitting, guarantee that this spraying device can normally carry out spraying treatment to fire control pipe fitting inner wall.
4. This automatic spraying device of fire control pipe fitting inner wall is through setting up the protection casing, because driven gear is located inside the protection casing, when driving motor drives the driving gear through the axis of rotation and rotates, and when the driving gear drove two driven gears and carry out high-speed rotation, the protection casing can play shelter from the guard action to driven gear to guarantee this spraying device's life.
According to the invention, the spraying structure, the drying structure, the driving structure and the air injection structure are arranged, the driving motor drives the air outlet pipe and the spray pipe to rotate through the rotating shaft, and paint enters the first connecting sleeve through the paint spraying machine and the guide pipe, so that the spray nozzle can perform comprehensive and uniform spraying treatment on the inner wall of the fire-fighting pipe, the quality of the processed fire-fighting pipe is ensured, the driving motor drives the spray pipe and the air outlet pipe to rotate through the rotating shaft, and simultaneously drives the driving gear to rotate, and the diameter of the driving gear is larger than that of the driven gear, so that the driving motor can drive the two rotating shafts to rotate rapidly, and when the rotating shafts drive the fan blades to rotate, air flow is transmitted into the second communicating sleeve through the air transmission pipe, and all the air injection covers are mutually communicated through the air outlet pipe, so that all the air injection covers can perform blow-drying treatment on paint in the fire-fighting pipe just after the spraying of the spray nozzle, the drying speed of the paint in the fire-fighting pipe is improved, and the processing efficiency is ensured.
Drawings
FIG. 1 is a perspective view of an automatic spraying device for the inner wall of a fire-fighting pipe fitting according to the present invention;
FIG. 2 is a view of the mounting sleeve, spray structure, drying structure, rolling structure and adjustment structure connection structure of the present invention;
FIG. 3 is a view of the connection structure of the mounting sleeve, the first connecting sleeve, the spray pipe, the spray nozzle, the second communicating sleeve, the air outlet pipe and the air jet housing of the present invention;
FIG. 4 is a view of the mounting sleeve, first coupling sleeve, nozzle, spout, outlet tube and drive structure connection of the present invention;
FIG. 5 is a view showing the connection structure of the fixed plate, the driving motor, the rotating shaft, the driving gear, the driven gear, the rotating shaft and the fan blades of the present invention;
FIG. 6 is a view of the threaded rod, threaded cartridge, swivel base, push plate, mounting base, first telescoping rod, mounting plate, riser and spring structure connection of the present invention;
FIG. 7 is an enlarged view of the invention at A of FIG. 4;
FIG. 8 is an enlarged view of the portion B of FIG. 4 in accordance with the present invention;
FIG. 9 is a view of the riser, movable block, turning roll, roller, second telescoping rod and spring connection of the present invention;
fig. 10 is a view of the spray structure and fire tube connection structure of the present invention.
In the figure: 1. a mounting sleeve; 2. spraying a structure; 201. a first connecting sleeve; 202. a spray pipe; 203. a nozzle; 204. a conduit; 3. a drying structure; 301. a second communication sleeve; 302. an air outlet pipe; 303. a gas-spraying cover; 4. a driving structure; 401. a fixing plate; 402. a driving motor; 403. a rotating shaft; 404. a drive gear; 405. a driven gear; 5. an air injection structure; 501. a mounting cover; 502. a rotation shaft; 503. a fan blade; 504. a gas pipe; 6. an adjustment structure; 601. a threaded rod; 602. a thread cylinder; 603. rotating the base; 604. a pushing plate; 605. a rotating disc; 7. a protective cover; 8. a rolling structure; 801. a mounting base; 802. a first telescopic rod; 803. a mounting plate; 804. a vertical plate; 805. a movable block; 806. a rotating roller; 807. a roller; 9. an elastic structure; 901. a second telescopic rod; 902. a spring; 10. fire-fighting pipe fittings.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments.
In the description of the present invention, it should be understood that the terms "upper," "lower," "front," "rear," "left," "right," "top," "bottom," "inner," "outer," and the like indicate or are based on the orientation or positional relationship shown in the drawings, merely to facilitate description of the present invention and to simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present invention.
Example 1:
referring to fig. 1-8, an automatic spraying device for the inner wall of a fire-fighting pipe fitting comprises a mounting sleeve 1 and a fire-fighting pipe fitting 10, and is characterized in that a spraying structure 2 and a drying structure 3 are mounted on the mounting sleeve 1, a driving structure 4 for driving the spraying structure 2 and the drying structure 3 to rotate is mounted inside the mounting sleeve 1, an air injection structure 5 is mounted on the mounting sleeve 1, the air injection structure 5 and the drying structure 3 are mutually matched to dry the inner wall of the fire-fighting pipe fitting 10, a rolling structure 8 is arranged at one end, far away from the spraying structure 2, of the surface of the mounting sleeve 1, an adjusting structure 6 for adjusting the self posture is arranged on the rolling structure 8, an elastic structure 9 is arranged inside the rolling structure 8, and the mounting sleeve 1 is positioned inside the fire-fighting pipe fitting 10;
the spraying structure 2 comprises a first connecting sleeve 201, the first connecting sleeve 201 is fixedly connected inside a mounting sleeve 1, a spray pipe 202 is rotatably connected inside the first connecting sleeve 201, a plurality of nozzles 203 are fixedly connected to the spray pipe 202, the drying structure 3 comprises a second communicating sleeve 301, the second communicating sleeve 301 is fixedly connected inside the mounting sleeve 1, an air outlet pipe 302 is rotatably connected inside the second communicating sleeve 301, a plurality of air injection covers 303 are mounted on the air outlet pipe 302, the air injection structure 5 comprises two mounting covers 501, the two mounting covers 501 are fixedly connected to the mounting sleeve 1, a rotating shaft 502 is rotatably connected to the mounting covers 501, fan blades 503 are fixedly connected to the rotating shaft 502, an air pipe 504 is fixedly connected to the mounting covers 501, the two mounting covers 501 are mutually communicated with the second communicating sleeve 301 through the air pipe 504, and the driving structure 4 drives the spray pipe 202, the air outlet pipe 302 and the two rotating shafts 502 to rotate.
In the invention, the spray pipe 202 is fixedly connected with the air outlet pipe 302, the spray pipe 202 is rotationally connected with the mounting sleeve 1, the first connecting sleeve 201 is mutually communicated with all the nozzles 203 through the spray pipe 202, the first connecting sleeve 201 is mutually communicated with the coating spraying machine through the guide pipe 204, when the drive motor 402 drives the spray pipe 202 to rotate through the rotating shaft 403, paint can enter the spray pipe 202 through the first connecting sleeve 201, then the inner wall of the fire-fighting pipe 10 is sprayed through all the nozzles 203, so that the paint spraying is more uniform, and the quality of processed products is ensured.
In the invention, the driving structure 4 comprises a fixing plate 401, the fixing plate 401 is fixedly connected to the inside of a mounting sleeve 1, a driving motor 402 is mounted on the fixing plate 401, the output end of the driving motor 402 is fixedly connected with a rotating shaft 403, the rotating shaft 403 is fixedly connected with an air outlet pipe 302, a driving gear 404 is fixedly connected to the rotating shaft 403, two driven gears 405 are meshed to the driving gear 404, the driven gears 405 are fixedly connected with a rotating shaft 502 which is close to the driving gear 404, when the driving motor 402 drives a spray pipe 202 and a spray nozzle 203 to rotate through the rotating shaft 403, the spray nozzle 203 can spray paint inside the fire protection pipe 10, and simultaneously under the cooperation of the driving gear 404 and the driven gears 405, the rotating shaft 502 drives a fan blade 503 to rotate, so that the second communication sleeve 301 and the air outlet pipe 302 are mutually matched, the sprayed paint can be dried through an air spraying cover 303, and the processing efficiency is ensured.
According to the spraying device, the two protective covers 7 are fixedly connected to the mounting sleeve 1, the driven gear 405 is positioned in the protective covers 7, the diameter of the driven gear 405 is smaller than that of the driving gear 404, and by arranging the protective covers 7, as the driven gear 405 is positioned in the protective covers 7, when the driving motor 402 drives the driving gear 404 to rotate through the rotating shaft 403, the protective covers 7 can shield the driven gear 405 when the driving gear 404 drives the two driven gears 405 to rotate at a high speed, so that the service life of the spraying device is ensured.
In the invention, the rolling structure 8 comprises a mounting base 801, the mounting base 801 is fixedly connected to one end of the surface of a mounting sleeve 1 far away from a nozzle 203, a plurality of groups of first telescopic rods 802 are fixedly connected to the mounting base 801, the same mounting plate 803 is fixedly connected to two groups of vertical plates 804 on the same group of first telescopic rods 802, movable blocks 805 are slidingly connected to the vertical plates 804, rotating rollers 806 are rotatably connected to the two adjacent movable blocks 805, rollers 807 are fixedly connected to the rotating rollers 806, all the rollers 807 are tightly attached to a fire-fighting pipe 10, the adjusting structure 6 comprises a threaded rod 601, the threaded rod 601 is fixedly connected to one side of the surface of the mounting sleeve 801 far away from the mounting sleeve 1, a threaded rod 601 is in threaded connection with a threaded cylinder 602, the rotating base 603 is rotatably connected to the threaded cylinder 602, the rotating base 603 is rotatably connected with a plurality of pushing plates 604, one end of the pushing plates 604 far away from the rotating base 603 is rotatably connected with a mounting plate 803 close to the rotating base 603, a rotating disc 605 is fixedly connected with the threaded cylinder 602, a plurality of rotating handles are fixedly connected to the surface of the rotating disc 605, a threaded rod 601 penetrates through the rotating disc 605, when an operator uses the spraying device to spray the inner wall of the fire-fighting pipe 10, the mounting sleeve 1 is firstly placed inside the fire-fighting pipe 10, the operator rotates the rotating disc 605, the rotating disc 605 drives the threaded cylinder 602 to rotate, the threaded cylinder 602 is in threaded connection with the threaded rod 601 due to the fact that the threaded cylinder 602 can drive the threaded cylinder 602 to move close to the mounting sleeve 1 or far away from the mounting sleeve 1 on the surface of the threaded rod 601, and due to the fact that the rotating base 603 is rotatably connected with the threaded cylinder 602, the thread cylinder 602 can push all the mounting plates 803 to move close to or away from each other through all the pushing plates 604, so that all the rollers 807 can move to be closely attached to the inner wall of the fire-fighting pipe 10, and the spraying device can perform spraying processing on the fire-fighting pipe 10 with different diameters, and the adaptability of the spraying device is improved.
Example 2:
referring to fig. 1-9, an automatic spraying device for the inner wall of a fire-fighting pipe fitting comprises a mounting sleeve 1 and a fire-fighting pipe fitting 10, and is characterized in that a spraying structure 2 and a drying structure 3 are mounted on the mounting sleeve 1, a driving structure 4 for driving the spraying structure 2 and the drying structure 3 to rotate is mounted inside the mounting sleeve 1, an air injection structure 5 is mounted on the mounting sleeve 1, the air injection structure 5 and the drying structure 3 are mutually matched to dry the inner wall of the fire-fighting pipe fitting 10, a rolling structure 8 is arranged at one end, far away from the spraying structure 2, of the surface of the mounting sleeve 1, an adjusting structure 6 for adjusting the self posture is arranged on the rolling structure 8, an elastic structure 9 is arranged inside the rolling structure 8, and the mounting sleeve 1 is positioned inside the fire-fighting pipe fitting 10;
the spraying structure 2 comprises a first connecting sleeve 201, the first connecting sleeve 201 is fixedly connected inside a mounting sleeve 1, a spray pipe 202 is rotatably connected inside the first connecting sleeve 201, a plurality of nozzles 203 are fixedly connected to the spray pipe 202, the drying structure 3 comprises a second communicating sleeve 301, the second communicating sleeve 301 is fixedly connected inside the mounting sleeve 1, an air outlet pipe 302 is rotatably connected inside the second communicating sleeve 301, a plurality of air injection covers 303 are mounted on the air outlet pipe 302, the air injection structure 5 comprises two mounting covers 501, the two mounting covers 501 are fixedly connected to the mounting sleeve 1, a rotating shaft 502 is rotatably connected to the mounting covers 501, fan blades 503 are fixedly connected to the rotating shaft 502, an air pipe 504 is fixedly connected to the mounting covers 501, the two mounting covers 501 are mutually communicated with the second communicating sleeve 301 through the air pipe 504, and the driving structure 4 drives the spray pipe 202, the air outlet pipe 302 and the two rotating shafts 502 to rotate.
In the invention, the spray pipe 202 is fixedly connected with the air outlet pipe 302, the spray pipe 202 is rotationally connected with the mounting sleeve 1, the first connecting sleeve 201 is mutually communicated with all the nozzles 203 through the spray pipe 202, the first connecting sleeve 201 is mutually communicated with the coating spraying machine through the guide pipe 204, when the drive motor 402 drives the spray pipe 202 to rotate through the rotating shaft 403, paint can enter the spray pipe 202 through the first connecting sleeve 201, then the inner wall of the fire-fighting pipe 10 is sprayed through all the nozzles 203, so that the paint spraying is more uniform, and the quality of processed products is ensured.
In the invention, the driving structure 4 comprises a fixing plate 401, the fixing plate 401 is fixedly connected to the inside of a mounting sleeve 1, a driving motor 402 is mounted on the fixing plate 401, the output end of the driving motor 402 is fixedly connected with a rotating shaft 403, the rotating shaft 403 is fixedly connected with an air outlet pipe 302, a driving gear 404 is fixedly connected to the rotating shaft 403, two driven gears 405 are meshed to the driving gear 404, the driven gears 405 are fixedly connected with a rotating shaft 502 which is close to the driving gear 404, when the driving motor 402 drives a spray pipe 202 and a spray nozzle 203 to rotate through the rotating shaft 403, the spray nozzle 203 can spray paint inside the fire protection pipe 10, and simultaneously under the cooperation of the driving gear 404 and the driven gears 405, the rotating shaft 502 drives a fan blade 503 to rotate, so that the second communication sleeve 301 and the air outlet pipe 302 are mutually matched, the sprayed paint can be dried through an air spraying cover 303, and the processing efficiency is ensured.
According to the spraying device, the two protective covers 7 are fixedly connected to the mounting sleeve 1, the driven gear 405 is positioned in the protective covers 7, the diameter of the driven gear 405 is smaller than that of the driving gear 404, and by arranging the protective covers 7, as the driven gear 405 is positioned in the protective covers 7, when the driving motor 402 drives the driving gear 404 to rotate through the rotating shaft 403, the protective covers 7 can shield the driven gear 405 when the driving gear 404 drives the two driven gears 405 to rotate at a high speed, so that the service life of the spraying device is ensured.
In the invention, the rolling structure 8 comprises a mounting base 801, the mounting base 801 is fixedly connected to one end of the surface of a mounting sleeve 1 far away from a nozzle 203, a plurality of groups of first telescopic rods 802 are fixedly connected to the mounting base 801, the same mounting plate 803 is fixedly connected to two groups of vertical plates 804 on the same group of first telescopic rods 802, movable blocks 805 are slidingly connected to the vertical plates 804, rotating rollers 806 are rotatably connected to the two adjacent movable blocks 805, rollers 807 are fixedly connected to the rotating rollers 806, all the rollers 807 are tightly attached to a fire-fighting pipe 10, the adjusting structure 6 comprises a threaded rod 601, the threaded rod 601 is fixedly connected to one side of the surface of the mounting sleeve 801 far away from the mounting sleeve 1, a threaded rod 601 is in threaded connection with a threaded cylinder 602, the rotating base 603 is rotatably connected to the threaded cylinder 602, the rotating base 603 is rotatably connected with a plurality of pushing plates 604, one end of the pushing plates 604 far away from the rotating base 603 is rotatably connected with a mounting plate 803 close to the rotating base 603, a rotating disc 605 is fixedly connected with the threaded cylinder 602, a plurality of rotating handles are fixedly connected to the surface of the rotating disc 605, a threaded rod 601 penetrates through the rotating disc 605, when an operator uses the spraying device to spray the inner wall of the fire-fighting pipe 10, the mounting sleeve 1 is firstly placed inside the fire-fighting pipe 10, the operator rotates the rotating disc 605, the rotating disc 605 drives the threaded cylinder 602 to rotate, the threaded cylinder 602 is in threaded connection with the threaded rod 601 due to the fact that the threaded cylinder 602 can drive the threaded cylinder 602 to move close to the mounting sleeve 1 or far away from the mounting sleeve 1 on the surface of the threaded rod 601, and due to the fact that the rotating base 603 is rotatably connected with the threaded cylinder 602, the thread cylinder 602 can push all the mounting plates 803 to move close to or away from each other through all the pushing plates 604, so that all the rollers 807 can move to be closely attached to the inner wall of the fire-fighting pipe 10, and the spraying device can perform spraying processing on the fire-fighting pipe 10 with different diameters, and the adaptability of the spraying device is improved.
According to the invention, the elastic structure 9 comprises the second telescopic rods 901, a plurality of second telescopic rods 901 are fixedly connected to the surface of the vertical plate 804, one end, far away from the vertical plate 804, of each second telescopic rod 901 is fixedly connected with the movable block 805, a spring 902 is sleeved on the outer wall of each second telescopic rod 901, one end of each spring 902 is fixedly connected with the vertical plate 804, the other end of each spring 902 is fixedly connected with the corresponding movable block 805, the cross section of each movable block 805 is set to be T-shaped, by arranging the corresponding second telescopic rods 901 and the corresponding springs 902, when an operator pulls the installation sleeve 1, the installation sleeve 1 moves inside the fire-fighting pipe 10, and therefore when the nozzle 203 sprays the fire-fighting pipe 10, if protrusions exist on the inner wall of the fire-fighting pipe 10, the corresponding roller 807 is blocked, and can move close to the installation base 801, the roller 807 extrudes the second telescopic rods 901 and the springs 902 through the rotating roller 806 and the two movable blocks 805, and after the roller 807 moves to a proper position, the extruded protrusions are released, the roller 807 automatically returns to the original position under the action of the second telescopic rods 901 and the springs 902, and the effect that the roller 807 can normally spray the fire-fighting pipe 10 moves inside the fire-fighting pipe 10.
Working principle: when an operator needs to use the spraying device to spray the inside of the fire-fighting pipe fitting 10, firstly, the installation sleeve 1 is placed inside the fire-fighting pipe fitting 10, the operator rotates the rotating disc 605, the rotating disc 605 drives the threaded cylinder 602 to rotate, the rotating disc 605 can drive the threaded cylinder 602 to move close to the installation sleeve 1 or away from the installation sleeve 1 on the surface of the threaded rod 601 due to the threaded connection of the threaded cylinder 602 and the threaded rod 601, and the rotating base 603 is rotationally connected with the threaded cylinder 602, so that the threaded cylinder 602 can push all the installation plates 803 to move close to or away from each other through all the pushing plates 604, and all the rollers 807 can move to be tightly attached to the inner wall of the fire-fighting pipe fitting 10;
after an operator places the spraying device inside the fire-fighting pipe fitting 10, a driving motor 402 drives an air outlet pipe 302 and a spray pipe 202 to rotate through a rotating shaft 403, paint enters the first connecting sleeve 201 through a paint spraying machine and a guide pipe 204, and the paint is sprayed out of a plurality of nozzles 203 on the spray pipe 202 due to the mutual communication of the first connecting sleeve 201 and the spray pipe 202, and the paint is sprayed onto the inner wall of the fire-fighting pipe fitting 10, and the spray pipe 202 drives the plurality of nozzles 203 to rotate, so that the nozzles 203 can comprehensively spray the inner wall of the fire-fighting pipe fitting 10;
the driving motor 402 drives the spray pipe 202 and the air outlet pipe 302 to rotate through the rotating shaft 403 and simultaneously drives the driving gear 404 to rotate, and because the diameter of the driving gear 404 is larger than that of the driven gear 405, the driving motor 402 can drive the two rotating shafts 502 to rotate rapidly, the rotating shafts 502 drive the fan blades 503 to rotate to generate air flow, the air flow is transmitted into the second communication sleeve 301 through the air pipe 504, and the second communication sleeve 301 is communicated with all the air injection covers 303 through the air outlet pipe 302, so that all the air injection covers 303 can dry paint in the fire-fighting pipe 10 just after the spraying of the spray nozzles 203;
when the operator pulls the installation sleeve 1 to enable the installation sleeve 1 to move inside the fire-fighting pipe 10, so that when the nozzle 203 sprays inside the fire-fighting pipe 10, if the inner wall of the fire-fighting pipe 10 is protruded, when the roller 807 is blocked, the corresponding roller 807 is blocked and can move close to the installation base 801, the roller 807 extrudes the second telescopic rod 901 and the spring 902 through the rotating roller 806 and the two movable blocks 805, so that the spraying device can normally move inside the fire-fighting pipe 10, sprays inside the fire-fighting pipe 10, after the roller 807 passes through the protrusion, the received protrusion extrusion is released, and the roller 807 automatically returns to the original position under the action of the second telescopic rod 901 and the spring 902.
The present invention is not limited to the above-mentioned embodiments, and any person skilled in the art, based on the technical solution of the present invention and the inventive concept thereof, can be replaced or changed within the scope of the present invention.
Claims (10)
1. The utility model provides an automatic spraying device of fire control pipe fitting inner wall, includes installation sleeve (1) and fire control pipe fitting (10), its characterized in that, install spraying structure (2) and drying structure (3) on installation sleeve (1), installation sleeve (1) internally mounted has drive spraying structure (2) and drying structure (3) to carry out rotatory drive structure (4), install jet architecture (5) on installation sleeve (1), jet architecture (5) and drying structure (3) mutually support and carry out drying treatment to fire control pipe fitting (10) inner wall, the one end that spraying structure (2) was kept away from on installation sleeve (1) surface is provided with rolling structure (8), be provided with on rolling structure (8) and carry out regulation structure (6) to self gesture, rolling structure (8) inside is equipped with elastic force structure (9), installation sleeve (1) are located fire control pipe fitting (10) inside;
spraying structure (2) are including first connecting sleeve (201), inside first connecting sleeve (201) fixed connection is in installation sleeve (1), inside rotation of first connecting sleeve (201) is connected with spray tube (202), fixedly connected with a plurality of nozzle (203) on spray tube (202), drying structure (3) are including second intercommunication sleeve (301), second intercommunication sleeve (301) fixed connection is inside installation sleeve (1), inside rotation of second intercommunication sleeve (301) is connected with outlet duct (302), install a plurality of jet-propelled cover (303) on outlet duct (302), jet-propelled structure (5) are including two installation covers (501), two equal fixed connection of installation cover (501) are in installation sleeve (1), rotation is connected with rotation axis (502) on installation cover (501), fixedly connected with flabellum (503) on installation cover (501), and two installation cover (501) all are through second air duct (202) and two air duct (301) intercommunication (4) and air duct (502) drive each other, rotation axis (502) are rotated and are carried out intercommunication (4).
2. The automatic spraying device for the inner wall of the fire-fighting pipe fitting according to claim 1, wherein the spray pipe (202) is fixedly connected with the air outlet pipe (302), and the spray pipe (202) is rotatably connected with the mounting sleeve (1).
3. An automatic spraying device for the inner wall of a fire-fighting pipe fitting according to claim 2, characterized in that the first connecting sleeve (201) is in communication with all nozzles (203) through a nozzle (202), and the first connecting sleeve (201) is in communication with a paint applicator through a conduit (204).
4. The automatic spraying device for the inner wall of the fire-fighting pipe fitting according to claim 3, wherein the driving structure (4) comprises a fixed plate (401), the fixed plate (401) is fixedly connected inside the installation sleeve (1), a driving motor (402) is installed on the fixed plate (401), the output end of the driving motor (402) is fixedly connected with a rotating shaft (403), the rotating shaft (403) is fixedly connected with the air outlet pipe (302), a driving gear (404) is fixedly connected on the rotating shaft (403), two driven gears (405) are meshed on the driving gear (404), and the driven gears (405) are fixedly connected with a rotating shaft (502) close to the driving gear.
5. The automatic spraying device for the inner wall of the fire-fighting pipe fitting according to claim 4, wherein the two protection covers (7) are fixedly connected to the installation sleeve (1), the driven gear (405) is located inside the protection covers (7), and the diameter of the driven gear (405) is smaller than that of the driving gear (404).
6. The automatic spraying device for the inner wall of the fire-fighting pipe fitting according to claim 5, wherein the rolling structure (8) comprises a mounting base (801), the mounting base (801) is fixedly connected to one end, far away from the nozzle (203), of the surface of the mounting sleeve (1), a plurality of groups of first telescopic rods (802) are radially fixedly connected to the mounting base (801), one mounting plate (803) is fixedly connected to the two first telescopic rods (802) of the same group, two groups of vertical plates (804) are fixedly connected to the mounting plate (803), movable blocks (805) are connected to the vertical plates (804) in a sliding manner, rotating rollers (806) are connected to the two adjacent movable blocks (805) in a rotating manner, rollers (807) are fixedly connected to the rotating rollers (806), and all the rollers (807) are tightly attached to the fire-fighting pipe fitting (10).
7. The automatic spraying device for the inner wall of the fire-fighting pipe fitting according to claim 6, wherein the adjusting structure (6) comprises a threaded rod (601), the threaded rod (601) is fixedly connected to one side, far away from the installation sleeve (1), of the surface of the installation base (801), a threaded cylinder (602) is connected to the threaded rod (601) in a threaded mode, a rotating base (603) is connected to the threaded cylinder (602) in a rotating mode, a plurality of pushing plates (604) are connected to the rotating base (603) in a rotating mode, and one end, far away from the rotating base (603), of the pushing plates (604) is connected to a mounting plate (803) in a rotating mode.
8. The automatic spraying device for the inner wall of the fire-fighting pipe fitting according to claim 7, wherein a rotating disc (605) is fixedly connected to the threaded cylinder (602), a plurality of rotating handles are fixedly connected to the surface of the rotating disc (605), and the threaded rod (601) penetrates through the rotating disc (605).
9. The automatic spraying device for the inner wall of the fire-fighting pipe fitting according to claim 8, wherein the elastic structure (9) comprises a second telescopic rod (901), a plurality of the second telescopic rods (901) are fixedly connected to the surface of the vertical plate (804), one end, far away from the vertical plate (804), of each second telescopic rod (901) is fixedly connected with the movable block (805), a spring (902) is sleeved on the outer wall of each second telescopic rod (901), one end of each spring (902) is fixedly connected with the corresponding vertical plate (804), the other end of each spring (902) is fixedly connected with the corresponding movable block (805), and the cross section of each movable block (805) is shaped like a T.
10. The method of using an automated fire fighting pipe inner wall spraying device according to any of claims 9, comprising the steps of:
s1, when an operator needs to use the spraying device to spray the inside of a fire-fighting pipe fitting (10), firstly, the installation sleeve (1) is placed inside the fire-fighting pipe fitting (10), the operator rotates the rotating disc (605), the rotating disc (605) drives the threaded cylinder (602) to rotate, the rotating disc (605) can drive the threaded cylinder (602) to move close to the installation sleeve (1) or away from the installation sleeve (1) on the surface of the threaded rod (601) due to the threaded connection of the threaded cylinder (602) and the rotating base (603), and the threaded cylinder (602) can push all installation plates (803) to move close to or away from each other through all pushing plates (803), so that all rollers (807) can move to be tightly attached to the inner wall of the fire-fighting pipe fitting (10);
s2, after an operator places the spraying device inside a fire-fighting pipe fitting (10), a driving motor (402) drives an air outlet pipe (302) and a spray pipe (202) to rotate through a rotating shaft (403), paint enters into a first connecting sleeve (201) through a paint spraying machine and a guide pipe (204), and the paint is sprayed out of a plurality of nozzles (203) on the spray pipe (202) due to the mutual communication of the first connecting sleeve (201) and the spray pipe (202), so that the paint is sprayed onto the inner wall of the fire-fighting pipe fitting (10), and the spray pipe (202) drives the plurality of nozzles (203) to rotate, so that the nozzles (203) can comprehensively spray the inner wall of the fire-fighting pipe fitting (10);
s3, the driving motor (402) drives the spray pipe (202) and the air outlet pipe (302) to rotate through the rotating shaft (403), and simultaneously drives the driving gear (404) to rotate, because the diameter of the driving gear (404) is larger than that of the driven gear (405), the driving motor (402) can drive the two rotating shafts (502) to rotate rapidly, the rotating shafts (502) drive the fan blades (503) to rotate to generate air flow, the air flow is transmitted to the inside of the second communication sleeve (301) through the air transmission pipe (504), and the second communication sleeve (301) is mutually communicated with all the air injection covers (303) through the air outlet pipe (302), so that all the air injection covers (303) can dry paint in the fire-fighting pipe (10) just after the spraying of the spray nozzle (203) is finished;
s4, when operating personnel pulls the installation sleeve (1), make installation sleeve (1) remove inside fire tube spare (10), thereby make nozzle (203) carry out spraying treatment to fire tube spare (10) inside, if fire tube spare (10) inner wall has the arch, when blockking up gyro wheel (807), corresponding gyro wheel (807) are hindered, can do the motion that is close to installation base (801), gyro wheel (807) are through rotor roll (806) and two movable blocks (805) extrusion second telescopic link (901) and spring (902), thereby make this spraying device can normally remove inside fire tube spare (10), carry out spraying treatment to fire tube spare (10) inner wall, after gyro wheel (807) pass through the arch, remove the protruding extrusion of receiving, under the effect of second telescopic link (901) and spring (902), make gyro wheel (807) automatic normal position that resumes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410012453.XA CN117505156A (en) | 2024-01-04 | 2024-01-04 | Automatic spraying device for inner wall of fire-fighting pipe fitting and application method of automatic spraying device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202410012453.XA CN117505156A (en) | 2024-01-04 | 2024-01-04 | Automatic spraying device for inner wall of fire-fighting pipe fitting and application method of automatic spraying device |
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Cited By (1)
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