CN216571342U

CN216571342U - A shower head for fire control

Info

Publication number: CN216571342U
Application number: CN202123228412.5U
Authority: CN
Inventors: 张宽
Original assignee: Chongqing Hua'an Building System Engineering Co ltd
Current assignee: Chongqing Hua'an Building System Engineering Co ltd
Priority date: 2021-12-21
Filing date: 2021-12-21
Publication date: 2022-05-24
Anticipated expiration: 2031-12-21

Abstract

The utility model relates to the technical field of spray headers, and particularly discloses a spray header for fire fighting, which comprises a connecting water inlet pipe, a spray mechanism and a fixing mechanism, wherein the fixing mechanism comprises a fixing ring, a fixing plate and two fixing units, the fixing unit comprises a fixing block, a pressing strip, a plurality of return springs, a sliding part and two fixing parts, the fixing plate is fixedly connected with the spray mechanism, the fixing ring is fixed on the water inlet pipe, a fixing groove is formed in the fixing plate, the fixing block is fixed on the fixing ring, the water inlet pipe, the fixing ring and the fixing block all penetrate through the fixing groove and abut against the spray mechanism, the sliding part is fixed on the top surface of the fixing plate and is connected with the pressing strip in a sliding manner, the return springs are fixedly connected with the fixing groove and the pressing strip, and the fixing parts are fixed on the fixing plate and are close to the pressing strip.

Description

A shower head for fire control

Technical Field

The application relates to the technical field of spray headers, and particularly discloses a spray header for fire fighting.

Background

The fire sprinkler head is used for the fire sprinkler system, and when the conflagration breaing out, water spills through shower head splash box and puts out a fire, divide into flagging type watering shower nozzle, upright type watering shower nozzle, ordinary type watering shower nozzle, side wall type watering shower nozzle etc. according to definition in GB5135.1.3.1, the watering shower nozzle is: under the action of heat, the water spraying device is automatically started within a preset temperature range or is started by control equipment according to a fire signal, and water is sprayed according to the designed water spraying shape and flow.

The traditional fire sprinkler head installation process is complex, and a professional tool is needed to fixedly install the fire sprinkler head, so that the traditional fire sprinkler head installation efficiency is low.

The present invention provides a fire-fighting spray head, so as to solve the problem of low installation efficiency of the conventional fire-fighting spray head.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a spray header for fire fighting, which aims to solve the problem that the traditional fire-fighting spray header in the prior art is low in installation efficiency.

In order to achieve the above object, a basic aspect of the present invention provides a shower head for fire protection: the water spraying device comprises a water inlet pipe connected with an external water supply device, a spraying mechanism and a fixing mechanism for fixedly connecting the spraying mechanism and the water inlet pipe, wherein the fixing mechanism comprises a fixing ring, a fixing plate and two fixing units, the fixing unit comprises a fixing block, a pressing strip, a plurality of return springs, a sliding part and two fixing parts, the fixing plate is fixedly connected with the spraying mechanism, the fixing ring is fixed on the water inlet pipe, a fixing groove is formed in the fixing plate, a fixing opening is formed in the bottom surface of the fixing groove, the fixing block is fixed on the fixing ring, the water inlet pipe, the fixing ring and the fixing block all penetrate through the fixing opening and abut against the spraying mechanism, the sliding part comprises a sliding frame, two sliding rods, two supporting rods and two sliding plates provided with sliding grooves, the two sliding plates are all fixed on the top surface of the fixing plate, the width of the sliding grooves is equal to the rod diameter of the sliding rods, one end of each return spring is fixed on the bottom surface in the fixing groove, the other end fixed connection layering is kept away from fixed block one end, and sliding frame sliding connection layering, two slide bars are one end fixed connection sliding frame respectively, and the other end slides in the sliding tray, and two bracing pieces are one end respectively and are placed on the fixed plate top surface, and other end butt sliding bar bottom surface, and the distance that replys between spring and the layering and be close to fixed block one end terminal surface is greater than the distance that replys between spring and the fixed block, and the fixed part is fixed on the fixed plate, and is close to the layering.

Compared with the prior art, the utility model has the following effects: when the spraying mechanism is to be installed, the water inlet pipe is aligned with the fixed groove, the fixed plate is abutted to the water inlet pipe, the fixed block and the water inlet pipe are both in the fixed opening, the supporting rod is taken away, the pressing strip is abutted to the top surface of the fixed block under the action of the return spring, the fixed part is started, the pressing strip can be extruded and fixed by the fixed part, finally the fixed block is fixed by the pressing strip, and the water inlet pipe and the spraying mechanism are fixed together. The area of the water inlet pipe, which is subjected to the tensile force of the spraying mechanism, can be increased by adopting the fixing ring, so that the pressure intensity of the water inlet pipe is reduced, and the service life of the water inlet pipe is prolonged; the fixed plate can increase the area of the spraying mechanism, which is subjected to pulling force, reduce the pressure intensity of the spraying mechanism and prolong the service time of the spraying mechanism.

Further, the fixed part includes two fixed cell bodies, the movable plate, the dead lever, two fixed springs and gag lever post, two fixed cell bodies are all fixed on the fixed plate top surface, set up the shifting chute on the fixed plate, shifting chute and fixed slot intercommunication, the dead lever slides in the shifting chute, and the dead lever is close to the layering, movable plate fixed connection dead lever, and both ends stretch into two fixed cell bodies respectively, fixed spring one end is fixed on fixed cell body medial surface, other end fixed connection movable plate, set up spacing hole on dead lever and shifting chute respectively, spacing hole is corresponding with the gag lever post, the dead lever passes through the gag lever with the fixed plate and fixes together.

Compared with the prior art, the utility model has the following effects: the dead lever can compress tightly the layering, has guaranteed the fixed of fixed block, and the movable plate can carry on spacingly for the position of dead lever with fixed cell body, prevents that the dead lever from being spurted and keeping away from the fixed block by the weight that sprays the mechanism, has guaranteed the practicality of dead lever.

Further, the sliding frame comprises two cambered surface blocks and two connecting strips, wherein the two bottom surfaces of the cambered surface blocks are cambered surfaces, the two cambered surface blocks are fixedly connected with the two connecting strips respectively, and the bottom surfaces of the cambered surface blocks are abutted to the top surface and the bottom surface of the pressing strip.

Compared with the prior art, the utility model has the following effects: the bottom surface of the cambered surface block is abutted to the top surface and the bottom surface of the pressing strip, so that the contact area between the sliding frame and the pressing strip can be reduced, the friction force between the sliding frame and the pressing strip is reduced, the sliding smoothness of the sliding frame on the pressing strip is improved, and the two connecting strips can be used for well fixing and connecting the two cambered surface blocks.

Further, the mechanism that sprays includes the bottom surface opening and is the safety cover of round platform form, the mount, sealed unit, two support element and splash unit, the fixed plate is fixed on the safety cover top surface, the inlet tube, the mount both ends are fixed on the bottom surface in the safety cover, the inlet tube, solid fixed ring and the all butt safety cover of fixed block, and the inlet tube passes the safety cover roof, the mouth of pipe of inlet tube and the interior top surface of safety cover are in the coplanar, two support element all one end rotate to connect the mount, top surface in other end fixed connection sealed unit and the safety cover, sealed unit butt inlet tube internal surface, splash unit all fixes on the mount.

Compared with the prior art, the utility model has the following effects: the safety cover can prevent the wall of the building from splashing water by the splashing disc when the water inlet pipe sprays water, the practicability of the splashing disc is improved, and the fixing frame can guarantee the practicability of the sealing unit, the supporting unit and the splashing unit.

Further, the sealing unit comprises a sealing layer, a cylindrical sealing block and a connecting frame, the sealing block is fixedly connected with the connecting frame, the sealing layer is fixed on the top surface and the side surface of the sealing block in the water inlet pipe and is abutted against the inner surface of the water inlet pipe, and two supporting units are fixedly connected with the two ends of the connecting frame.

Compared with the prior art, the utility model has the following effects: sealing layer butt inlet tube internal surface can prevent that the inlet tube from to external water spray when not having the conflagration breaing out, has improved the practicality of inlet tube, and sealed piece can support the sealing layer, has guaranteed the practicality of sealing layer.

Further, the supporting unit comprises two guide plates, a supporting column, a glass body filled with thermal expansion liquid, two guide blocks, a rotating part and a telescopic part, the rotating part comprises a rotating pipe and two baffle plates, the telescopic part comprises a telescopic plate, a mounting seat and two telescopic springs, the two guide plates are fixed on the inner top surface of the protective cover and are abutted against the connecting frame, one end of the supporting column is fixedly connected with the connecting frame, the other end of the supporting column is fixedly connected with the telescopic plate, the two baffle plates are fixed on the fixing frame, the rotating pipe is rotatably connected with the fixing frame and are abutted against the two baffle plates, the mounting seat is fixed on the top surface of the rotating pipe, mounting grooves are respectively formed in one end of the supporting column, which is far away from the connecting frame, and on the top surface of the mounting seat, the mounting grooves correspond to the glass body, the glass body is fixed in the mounting grooves of the supporting column and the mounting seat and is abutted against the supporting column and the mounting seat, one end of each telescopic spring is fixed on the bottom surface of the telescopic plate, the other end fixed connection rotating tube, two guide blocks all fix on the rotating tube top surface, and butt expansion plate.

Compared with the prior art, the utility model has the following effects: the glass body is heated and can be cracked, leads to sealing layer and sealed piece to keep away from the inlet tube when ambient temperature rises, has guaranteed the practicality of sealing layer and sealed piece, and the rotating tube can let behind the inlet tube was kept away from to sealing layer and sealed piece, rotates the below that dabbles the unit under the effect of rivers in gravity and the inlet tube, has avoided the sealed unit to the hindrance that dabbles the unit, has improved the work efficiency that dabbles the unit.

Furthermore, the water splashing unit comprises two water splashing rods and a water splashing tray, one end of each of the two water splashing rods is fixed on the fixing frame, and the other end of each of the two water splashing rods is fixed on the bottom surface of the water splashing tray.

Compared with the prior art, the utility model has the following effects: the splash box can disperse the water that the inlet tube flow was come to the external world, has increased the area that the water covered in the inlet tube, has improved the fire efficiency that sprays the mechanism, and two splash pipes can be fine support the splash box, have guaranteed the positional stability who splashes the splash box.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.

FIG. 1 is a front view of an embodiment of a sprinkler head for fire protection of the present invention;

FIG. 2 is a cross-sectional view of FIG. 1;

FIG. 3 is an enlarged view of a portion A of FIG. 2;

fig. 4 is a schematic structural view of the fixing mechanism in fig. 2.

Detailed Description

The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, 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 application.

The following is further detailed by the specific embodiments:

reference numerals in the drawings of the specification include: the fixing frame comprises a fixing frame 1, a protective cover 2, a fixing plate 3, a water inlet pipe 4, a fixing ring 5, a water splashing disc 6, a rotating pipe 7, a telescopic plate 8, a sealing layer 9, a telescopic spring 10, a glass body 11, a pressing bar 12, a return spring 13, a limiting rod 14, a supporting rod 15, a sliding frame 16 and a fixing groove body 17.

Example (b):

the specific implementation process of the utility model comprises the following steps: a spray header for fire fighting, as shown in figure 1, figure 2 and figure 3, comprises a water inlet pipe 4 connected with an external water supply device, a spray mechanism and a fixing mechanism for fixedly connecting the spray mechanism and the water inlet pipe 4, the fixing mechanism comprises a fixing ring 5, a fixing plate 3 and two fixing units, the fixing unit comprises a fixing block, a pressing strip 12, a plurality of return springs 13, a sliding part and two fixing parts, the fixing plate 3 is fixedly connected with the spray mechanism, the fixing ring 5 is fixed on the water inlet pipe 4, a fixing groove is arranged on the fixing plate 3, a fixing opening is arranged on the bottom surface of the fixing groove, the fixing block is fixed on the fixing ring 5, the water inlet pipe 4, the fixing ring 5 and the fixing block all pass through the fixing opening and abut against the spray mechanism, the sliding part comprises a sliding frame 16, two sliding rods, two supporting rods 15 and two sliding plates provided with sliding grooves, and the two sliding plates are all fixed on the top surface of the fixing plate 3, the width of sliding tray equals the pole footpath of slide bar, answer spring 13 one end and fix on the bottom surface in the fixed slot, other end fixed connection layering 12 keeps away from fixed block one end, 16 sliding connection layering 12 of sliding frame, two slide bars are one end fixed connection sliding frame 16 respectively, the other end slides in the sliding tray, two bracing pieces 15 are respectively one end and place on 3 top surfaces of fixed plate, other end butt sliding bar bottom surfaces, answer spring 13 and layering 12 and are close to the distance between fixed block one end terminal surface and than the distance between answer spring 13 and the fixed block greatly, the fixed part is fixed on fixed plate 3, and be close to layering 12.

As shown in fig. 2 and 4, the fixing portion includes two fixing groove bodies 17, a movable plate, a fixing rod, two fixing springs and a limiting rod 14, the two fixing groove bodies 17 are all fixed on the top surface of the fixing plate 3, a moving groove is formed in the fixing plate 3, the moving groove is communicated with the fixing groove, the fixing rod slides in the moving groove, the fixing rod is close to the pressing strip 12, the fixing rod is fixedly connected with the fixing rod, two ends of the fixing rod respectively extend into the two fixing groove bodies 17, one end of each fixing spring is fixed on the inner side surface of the fixing groove body 17, the other end of each fixing spring is fixedly connected with the movable plate, limiting holes are formed in the fixing rod and the moving groove respectively, the limiting holes correspond to the limiting rod 14, and the fixing rod and the fixing plate 3 are fixed together through the limiting rod 14.

As shown in fig. 3, the sliding frame 16 includes two arc blocks and two connecting strips, the bottom surfaces of the two arc blocks are arc surfaces, the two arc blocks are respectively fixedly connected with the two connecting strips, and the bottom surfaces of the two arc blocks are abutted against the top surface and the bottom surface of the pressing strip 12.

As shown in fig. 1 and fig. 2, the spraying mechanism includes bottom surface opening and is the safety cover 2 of round platform form, mount 1, sealed unit, two support unit and splash unit, fixed plate 3 is fixed on 2 top surfaces of safety cover, inlet tube 4, mount 1 both ends are fixed on the bottom surface in safety cover 2, inlet tube 4, solid fixed ring 5 and fixed block all butt safety cover 2, and inlet tube 4 passes 2 roof of safety cover, the mouth of pipe of

inlet tube

4 and 2 interior top surfaces of safety cover are in the coplanar, two support unit all one end are rotated and are connected mount 1, other end fixed connection sealed unit and 2 interior top surfaces of safety cover, 4 internal surfaces of sealed unit butt inlet tube, splash unit all fixes on mount 1.

As shown in fig. 2, the sealing unit includes a sealing layer 9, a cylindrical sealing block and a connecting frame, the sealing block is fixedly connected to the connecting frame, the sealing layer 9 is fixed on the top surface and the side surface of the sealing block in the water inlet pipe 4 and abuts against the inner surface of the water inlet pipe 4, and two ends of the connecting frame are fixedly connected to the two supporting units.

As shown in fig. 1 and fig. 2, the supporting unit comprises two guide plates, a supporting column, a glass body 11 filled with a thermal expansion liquid, two guide blocks, a rotating part and a telescopic part, the rotating part comprises a rotating pipe 7 and two baffles, the telescopic part comprises a telescopic plate 8, a mounting seat and two telescopic springs 10, the two guide plates are fixed on the inner top surface of the protective cover 2 and abut against the connecting frame, one end of the supporting column is fixedly connected with the connecting frame, the other end of the supporting column is fixedly connected with the telescopic plate 8, the two baffles are fixed on the fixing frame 1, the rotating pipe 7 is rotatably connected with the fixing frame 1 and abuts against the two baffles, the mounting seat is fixed on the top surface of the rotating pipe 7, mounting grooves are respectively arranged on one end of the supporting column far away from the connecting frame and on the top surface of the mounting seat, the mounting grooves correspond to the glass body 11, the glass body 11 is fixed in the mounting grooves of the supporting column and the mounting seat and abuts against the supporting column and the mounting seat, two expanding springs 10 are respectively one end fixed on 8 bottom surfaces of expansion plate, and other end fixed connection rotating tube 7, and two guide blocks are all fixed on 7 top surfaces of rotating tube, and butt expansion plate 8.

As shown in fig. 2, the water splashing unit includes two water splashing rods and a water splashing tray 6, wherein one end of each of the two water splashing rods is fixed on the fixing frame 1, and the other end is fixed on the bottom surface of the water splashing tray 6.

When will installing and spray the mechanism, align inlet tube 4 and fixed slot earlier, then 3 butt inlet tubes 4 of fixed plate, let fixed block and inlet tube 4 all in the fixed orifices, then take away bracing piece 15, then layering 12 is the downstream under the effect of answer spring 13, and the top surface of butt fixed block, when layering 12 downstream, sliding frame 16 can slide on layering 12, guarantee that the slide bar slides the bottom of sliding tray, restart the fixed part, the fixed part can extrude layering 12 fixed, layering 12 is fixed the fixed block at last, inlet tube 4 is together fixed with spraying the mechanism, inlet tube 4 is made by the stainless steel, bracing piece 15 can be before dispatching from the factory just butt fixed plate 3 and slide bar.

When the pressing bar 12 is abutted against the top surface of the fixed block, a worker takes the limiting rod 14 out of the limiting hole, then the fixed spring can flick the movable plate, the movable plate can drive the fixed rod to move when moving until the fixed rod leaves the moving groove, the fixed rod is abutted against the top surface of the pressing bar 12, the fixed rod and the sliding and restoring spring 13 can complete the fixation of the pressing bar 12, and the limiting rod 14 can be inserted into the limiting hole before leaving a factory.

The bottom surface of the cambered surface block is abutted against the top surface and the bottom surface of the pressing strip 12, so that the contact area between the sliding frame 16 and the pressing strip 12 can be reduced, the friction force between the sliding frame 16 and the pressing strip 12 is reduced, the sliding smoothness of the sliding frame 16 on the pressing strip 12 is improved, and the cambered surface block can be made of wear-resistant alloy steel.

The safety cover 2 can prevent the water from splashing by the splashing disc 6 when the water inlet pipe 4 sprays water, the practicability of the splashing disc 6 is improved, the fixing frame 1 can ensure the practicability of the sealing unit, the supporting unit and the splashing unit, and the safety cover 2 can be made of stainless steel.

Sealing layer 9 butt inlet tube 4 internal surface can prevent that inlet tube 4 from to external water spray when not having the conflagration breaing out, has improved inlet tube 4's practicality, and sealed piece can support sealing layer 9, and sealing layer 9 can be by butadiene acrylonitrile rubber.

When a fire disaster occurs, the temperature in the building rises, then the temperature sensed by the glass body 11 reaches a preset range, the heated expansion liquid in the glass body 11 expands rapidly and damages the glass body 11, then the support column pulls the connecting frame to move downwards under the action of gravity and the tensile force of the telescopic spring 10, in the moving process of the connecting frame, the guide plate guides the connecting frame, the guide block guides the support column, the connecting frame pulls the sealing layer 9 and the sealing block out of the water inlet pipe 4 during moving, when the sealing layer 9 and the sealing block completely leave the water inlet pipe 4, the sealing unit rotates relative to the fixing frame 1 through the rotating pipe 7 under the action of gravity and the impact force of the water in the water inlet pipe 4, the sealing unit finally stays below the fixing frame 1, then the water in the water pipe 4 falls into the water splashing disc 6 and is splashed to the lower part by the water splashing disc 6 to extinguish the fire disaster, the liquid in the glass body 11 may be kerosene or ether liquid.

Splash box 6 can be external to the water dispersion that inlet tube 4 flowed, has increased the area that the water covered in the inlet tube 4, has improved the fire efficiency that sprays the mechanism, and two splash pipes can be fine support splash box 6, and splash box 6 can be made by the stainless steel and form.

The utility model provides a shower head during operation for fire control, align inlet tube 4 and fixed slot earlier, then 3 butt inlet tubes 4 of fixed plate, let fixed block and inlet tube 4 all in fixed mouthful, then take away bracing piece 15, then layering 12 is the downstream under the effect of answer spring 13, and the top surface of butt fixed block, when layering 12 moves down, sliding frame 16 can slide on layering 12, guarantee the bottom that the slide bar slided the sliding tray, restart the fixed part, the fixed part can extrude layering 12 fixed, layering 12 is fixed the fixed block at last, inlet tube 4 is together fixed with spraying mechanism, inlet tube 4 is made by the stainless steel and is formed, bracing piece 15 can leave the factory just butt fixed plate 3 and slide bar before.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present application, and not to limit the same; although the present application has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not necessarily depart from the spirit and scope of the corresponding technical solutions in the embodiments of the present application.

Claims

1. A shower head for fire control which characterized in that: the water spraying device comprises a water inlet pipe connected with an external water supply device, a spraying mechanism and a fixing mechanism for fixedly connecting the spraying mechanism and the water inlet pipe, wherein the fixing mechanism comprises a fixing ring, a fixing plate and two fixing units, the fixing unit comprises a fixing block, a pressing strip, a plurality of return springs, a sliding part and two fixing parts, the fixing plate is fixedly connected with the spraying mechanism, the fixing ring is fixed on the water inlet pipe, a fixing groove is formed in the fixing plate, a fixing opening is formed in the bottom surface of the fixing groove, the fixing block is fixed on the fixing ring, the water inlet pipe, the fixing ring and the fixing block all penetrate through the fixing opening and abut against the spraying mechanism, the sliding part comprises a sliding frame, two sliding rods, two supporting rods and two sliding plates provided with sliding grooves, the two sliding plates are all fixed on the top surface of the fixing plate, the width of the sliding grooves is equal to the rod diameter of the sliding rods, one end of each return spring is fixed on the bottom surface in the fixing groove, the other end fixed connection layering is kept away from fixed block one end, and sliding frame sliding connection layering, two slide bars are one end fixed connection sliding frame respectively, and the other end slides in the sliding tray, and two bracing pieces are one end respectively and are placed on the fixed plate top surface, and other end butt sliding bar bottom surface, and the distance that replys between spring and the layering and be close to fixed block one end terminal surface is greater than the distance that replys between spring and the fixed block, and the fixed part is fixed on the fixed plate, and is close to the layering.

2. A showerhead for fire fighting as defined in claim 1, wherein: the fixed part includes two fixed cell bodies, the movable plate, the dead lever, two fixed spring and gag lever post, two fixed cell bodies are all fixed on the fixed plate top surface, set up the shifting chute on the fixed plate, shifting chute and fixed slot intercommunication, the dead lever slides in the shifting chute, and the dead lever is close to the layering, movable plate fixed connection dead lever, and both ends stretch into two fixed cell bodies respectively, fixed spring one end is fixed on fixed cell body medial surface, other end fixed connection movable plate, set up spacing hole on dead lever and shifting chute respectively, spacing hole is corresponding with the gag lever post, the dead lever passes through the gag lever post with the fixed plate and fixes together.

3. A showerhead for fire fighting as defined in claim 2, characterized in that: the sliding frame comprises two cambered surface blocks and two connecting strips, the two bottom surfaces of the cambered surface blocks are cambered surfaces, the two cambered surface blocks are fixedly connected with the two connecting strips respectively, and the bottom surfaces of the cambered surface blocks are abutted to the top surface and the bottom surface of the pressing strip.

4. A showerhead for fire fighting as defined in claim 1, wherein: spray the mechanism and include the bottom surface opening and be the safety cover of round platform form, the mount, sealed unit, two support element and splash unit, the fixed plate is fixed on the safety cover top surface, the inlet tube, the mount both ends are fixed on the bottom surface in the safety cover, the inlet tube, fixed ring and the all butt safety cover of fixed block, and the inlet tube passes the safety cover roof, the mouth of pipe of inlet tube and top surface are in the coplanar in the safety cover, the mount is connected in the rotation of all one ends of two support element, top surface in other end fixed connection sealed unit and the safety cover, sealed unit butt inlet tube internal surface, splash unit all fixes on the mount.

5. A showerhead for fire fighting as defined in claim 4, wherein: the sealing unit comprises a sealing layer, a cylindrical sealing block and a connecting frame, the sealing block is fixedly connected with the connecting frame, the sealing layer is fixed on the top surface and the side surface of the sealing block in the water inlet pipe and is abutted against the inner surface of the water inlet pipe, and two supporting units are fixedly connected with the two ends of the connecting frame.

6. A showerhead for fire fighting as defined in claim 4, wherein: the supporting unit comprises two guide plates, a supporting column, a glass body filled with thermal expansion liquid, two guide blocks, a rotating part and a telescopic part, the rotating part comprises a rotating pipe and two baffle plates, the telescopic part comprises a telescopic plate, a mounting seat and two telescopic springs, the two guide plates are all fixed on the top surface in the protective cover and are abutted against the connecting frame, one end of the supporting column is fixedly connected with the connecting frame, the other end of the supporting column is fixedly connected with the telescopic plate, the two baffle plates are all fixed on the fixing frame, the rotating pipe is rotatably connected with the fixing frame and are abutted against the two baffle plates, the mounting seat is fixed on the top surface of the rotating pipe, one end of the supporting column, which is far away from the connecting frame, and the top surface of the mounting seat are respectively provided with a mounting groove, the mounting grooves correspond to the glass body, the glass body is fixed in the mounting grooves of the supporting column and the mounting seat and is abutted against the supporting column and the mounting seat, and one end of each telescopic spring is fixed on the bottom surface of the telescopic plate, the other end fixed connection rotating tube, two guide blocks all fix on the rotating tube top surface, and butt expansion plate.

7. A showerhead for fire fighting as defined in claim 5, wherein: the water splashing unit comprises two water splashing rods and a water splashing tray, one end of each of the two water splashing rods is fixed on the fixing frame, and the other end of each of the two water splashing rods is fixed on the bottom surface of the water splashing tray.