CN215275565U

CN215275565U - Automatic sprinkling fire extinguishing device with replaceable nozzle for teaching

Info

Publication number: CN215275565U
Application number: CN202121544772.3U
Authority: CN
Inventors: 刘嘉华
Original assignee: Guangdong Flame Blue Fire Technology Co ltd
Current assignee: Guangdong Flame Blue Fire Technology Co ltd
Priority date: 2021-07-07
Filing date: 2021-07-07
Publication date: 2021-12-24
Anticipated expiration: 2031-07-07

Abstract

The utility model relates to the technical field of fire extinguishing devices, in particular to a rain automatic water spraying fire extinguishing device with a replaceable spray head for teaching, which comprises a box body, wherein the left side of the top end of the box body is provided with a water feeding pipe and is in threaded connection with a first pipe cover, the middle part of the top end of the box body is vertically and movably provided with a support rod, the top end of the support rod is fixedly provided with a mounting frame, the inner walls of the left side and the right side of the mounting frame are respectively and movably provided with a round rod, a spray pipe is jointly and fixedly arranged between the two round rods, the left end of the round rod passes through the mounting frame and extends to the outside of the mounting frame to be fixedly provided with a hand wheel, the utility model is convenient for mounting, dismounting and replacing the first spray head, meets the use requirement, can automatically realize the swing of the first spray head so as to expand the coverage range without manual operation, saves time and labor, and can disinfect the handle when in use, thereby reducing the risk of cross infection, is worthy of popularization and application.

Description

Automatic sprinkling fire extinguishing device with replaceable nozzle for teaching

Technical Field

The utility model relates to a extinguishing device technical field especially relates to a teaching is with automatic sprinkler system that sprays water that drenches that has removable shower nozzle.

Background

Fire control is to eliminate hidden troubles and prevent disasters (i.e. to prevent and solve human, natural and accidental disasters in life, work and learning processes), and the meaning of fire control in the early stage of understanding is (extinguishing) fire.

Need use extinguishing device during fire control teaching, current extinguishing device is when using, thereby it promotes the covering surface to need the artifical continuous swing that carries out the shower nozzle, so waste time and energy, current extinguishing device does not possess the automatic swing function of shower nozzle, and when teaching, can appear different students and the continuous change of teacher's handle of the extinguishing device of taking, make the infection easily appear in the close head of current epidemic situation, current extinguishing device can not disinfect after using the handle, for this we propose a teaching aid have the automatic sprinkler head extinguishing device that drenches of removable shower nozzle to solve this type of problem.

SUMMERY OF THE UTILITY MODEL

The utility model aims at solving the defects existing in the prior art and providing a rain automatic water spraying fire extinguishing device with a replaceable spray head for teaching.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

the design is a rain automatic water spraying fire extinguishing device with a replaceable nozzle for teaching, which comprises a box body, wherein a water feeding pipe is arranged on the left side of the top end of the box body, a first pipe cover is in threaded connection with the water feeding pipe, a supporting rod is vertically and movably arranged in the middle of the top end of the box body, a mounting frame is fixedly arranged at the top end of the supporting rod, round rods are movably arranged on the inner walls of the left side and the right side of the mounting frame respectively, a spray pipe is fixedly arranged between the two round rods together, the left end of the left round rod penetrates through the mounting frame and extends to the outside of the round rod, a hand wheel is fixedly arranged on the left side of the round rod penetrates through the mounting frame and extends to the outside of the round rod, a knob is in threaded connection with the right side of the round rod, a rubber pad is arranged on the left side of the knob, a first nozzle is in threaded connection with the front side of the spray pipe, a water pump is fixedly arranged on the lower portion of the right side of the box body through a mounting shell, and the bottom end of the water pump is communicated with the lower portion of the right side of the box body through a first pipe body, the upper part of the right side of the box body is fixedly provided with a shell through a pair of fixed plates, the top end of the water pump is communicated with the bottom end of the shell through a second pipe body, the inside of the shell is transversely movably provided with a rotating rod, the outer equidistance of the rotating rod is fixedly provided with a rotating plate around, the middle part of the top end of the shell is communicated with the rear end of the spray pipe through a third pipe body, the left side and the right side of the top end of the box body are respectively fixedly provided with a side plate, the pair of side plates are positioned at the rear part of a support rod, a reciprocating lead screw is transversely movably arranged between the pair of side plates, the outer part of the reciprocating lead screw is sleeved with a slide block, the front side of the slide block is fixedly provided with a rack, the lower part of the outer side of the support rod is fixedly sleeved with a gear meshed with the rack, the right end of the reciprocating lead screw passes through the side plates and extends to the outside of the side plates, the left end of the rotating rod passes through the shell and extends to the outside of the rotating rod, and the right end of the reciprocating lead screw is fixedly provided with a first chain wheel, two first sprockets are connected through a first chain belt, a handle is arranged above the back face of the box body, and a disinfection mechanism is arranged on the back face of the box body.

Preferably, the disinfection mechanism comprises a pair of vertical plates, the vertical plates are fixedly arranged on the upper left side of the back surface of the box body, a driving rod is transversely movably arranged between the vertical plates, the left end of the driving rod penetrates through the vertical plates and extends to the outside of the vertical plates, the left end of the reciprocating screw rod penetrates through the side plate and extends to the outside of the vertical plates, the left ends of the reciprocating screw rod and the driving rod are fixedly provided with second chain wheels, the two second chain wheels are connected through a second chain belt, the driving wheel is fixedly sleeved on the outside of the driving rod, the back surface of the box body is fixedly provided with a piston cylinder below the driving wheel, a piston is arranged inside the piston cylinder, the middle part of the top end of the piston is fixedly provided with a mandril, the top end of the mandril penetrates through the piston rod and extends to the outside of the mandril and is abutted against the driving wheel, a pressing plate is fixedly sleeved on the outside of the mandril, and a spring is sleeved between the pressing plate and the piston cylinder, the utility model discloses a portable injection molding machine, including box, piston cylinder, injection pipe, the inside of taking out the pipe is equipped with first valve body, the top right side of depositing the case is equipped with the filler pipe, the top threaded connection of filler pipe has the second tube cap, the right side lower part fixed mounting of piston cylinder has the injection tube rather than inside intercommunication, the inside of injection tube is equipped with the second valve body, the equal fixed mounting in upper portion of the left and right sides of injection tube has the pipe of impressing that is linked together, the top fixed mounting of the pipe of impressing has the box body, two the box body is located the both sides of handle respectively, the inboard top-down of box body is equipped with many pairs of orifices, be equipped with the second shower nozzle in the orifice.

Preferably, the first valve body and the second valve body are provided as one-way valve members.

Preferably, the drive wheel is provided in particular as a cam member.

Preferably, the rotating rod is arranged at the oblique rear part of the top end of the second pipe body.

The utility model provides a pair of automatic sprinkler installation that drenches with rain that has removable shower nozzle is used in teaching, beneficial effect lies in:

1. when the utility model is used, the reversible knob drives the rubber pad to leave the mounting frame, the handwheel can be rotated to drive the round bar to rotate to realize the rotation of the spray pipe and the adjustment of the angle of the spray pipe, the reversible knob drives the rubber pad to be contradicted with the mounting frame to realize the fixation of the angle after the completion, the first spray head can be rotated to separate from the spray pipe to realize the disassembly of the first spray head, and then the new first spray head can be combined with the rotation of the spray pipe to realize the replacement of the first spray head;

2. the utility model discloses start water pump and make its work through first body with the water in the box take out through the second body and pour into the casing into the spray tube afterwards and spout from first shower nozzle in entering the third body, impact the rotor plate when water enters into the casing and make its rotation drive the bull stick rotation and realize the rotation of the first sprocket that connects and rotate through first chain belt drive the first sprocket rotation of top and realize the rotation of reciprocal lead screw, reciprocal lead screw rotates and drives slider and rack left and right reciprocating motion and make drive gear and bracing piece swing along with it and make drive mounting bracket swing along with it and realize the continuous swing of first shower nozzle position so that can expand and spray coverage and make and need not artifical swing, labour saving and time saving;

3. the utility model can drive the second chain wheel to rotate when the reciprocating screw rod rotates, thereby the second chain wheel below the driving wheel is driven by the second chain belt to rotate, the driving wheel is driven to rotate continuously, when the driving wheel rotates to the convex end of the driving wheel contacts with the ejector rod, the driving wheel can drive the driving wheel to descend, thereby the driving piston descends, and simultaneously the pressing plate is driven to descend to compress the spring to deform to generate acting force, when the driving wheel rotates to the convex end of the driving wheel to separate from the ejector rod, the spring releases the acting force to drive the pressing plate to ascend and reset, thereby the reset of the ejector rod is realized, thereby the piston ascends, when the piston descends, the disinfectant in the piston cylinder is extruded outwards to close the first valve body, the second valve body is opened, at the moment, the disinfectant enters the box body through the injection pipe and the press-in pipe to be filled with pressure instantly to open and spray the second nozzle, thereby the disinfection of the handle is realized, when the piston rises, the first valve body is opened, the second valve body is closed, and the disinfectant in the storage box is pumped into the piston cylinder to be supplemented;

the utility model discloses be convenient for ann tears open the change to first shower nozzle, thereby satisfy and use the swing that needs and can realize first shower nozzle automatically and make and to enlarge coverage and need not the manual work and go on, labour saving and time saving can disinfect to the handle when using to cross infection's risk can be reduced to appear, be worth promoting and using.

Drawings

FIG. 1 is a schematic structural view of a deluge automatic water-spraying fire-extinguishing device with replaceable nozzle for teaching of the utility model;

FIG. 2 is a schematic view of a rear view of the automatic sprinkler with replaceable nozzle for teaching of the present invention;

FIG. 3 is a right view structural diagram of the automatic sprinkling fire extinguishing apparatus with replaceable nozzle for teaching of the utility model;

FIG. 4 is a schematic view of a rear view structure of the disinfection mechanism of the present invention;

fig. 5 is a schematic side view of the box body according to the present invention.

In the figure: the device comprises a box body 1, a support rod 2, a mounting frame 3, a round rod 4, a knob 5, a spray pipe 6, a first spray head 7, a water pump 8, a shell 9, a rotating rod 10, a rotating plate 11, a third pipe body 12, a reciprocating screw rod 13, a sliding block 14, a rack 15, a gear 16, a first chain wheel 17, a disinfection mechanism 18, a drive rod 1801, a second chain wheel 1802, a drive wheel 1803, a piston cylinder 1804, a push rod 1805, a pressing plate 1806, a storage box 1807, a first valve body 1808, an injection pipe 1809, a second valve body 1810, a press-in pipe 1811, a box body 1812 and a second spray head 1813.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments.

Referring to fig. 1-5, a rain automatic water spraying fire extinguishing device with replaceable nozzles for teaching, which comprises a box body 1, wherein a water feeding pipe is arranged on the left side of the top end of the box body 1 and is in threaded connection with a first pipe cover, a supporting rod 2 is vertically and movably arranged in the middle of the top end of the box body 1, an installation frame 3 is fixedly arranged at the top end of the supporting rod 2, round rods 4 are movably arranged on the inner walls of the left side and the right side of the installation frame 3, a spray pipe 6 is fixedly arranged between the two round rods 4, the left end of the round rod 4 on the left side passes through the installation frame 3 and extends to the outside of the installation frame, a hand wheel is fixedly arranged on the left side, the right end of the round rod 4 on the right side passes through the installation frame 3 and extends to the outside of the installation frame, a knob 5 is connected with threads, a rubber pad is arranged on the left side of the knob 5, a first nozzle 7 is in threaded connection with the lower part of the front side of the spray pipe 6, a water pump 8 is fixedly arranged on the lower part of the right side of the box body 1 through an installation shell, and the bottom end of the water pump 8 is communicated with the lower part of the right side of the box body 1 through a first pipe body, there is casing 9 on the right side upper portion of box 1 through a pair of fixed plate fixed mounting, and the bottom intercommunication of second body and casing 9 is passed through on the top of water pump 8, and the horizontal movable mounting in inside of casing 9 has bull stick 10, and fixed mounting is encircleed around to the outside equidistance of bull stick 10 has rotor plate 11, and rotor rod 10 is located the oblique rear setting on second body top for the water that dashes out from the second body can impact rotor plate 11 and make it drive bull stick 10 and rotate.

The middle part of the top end of the shell 9 is communicated with the rear side of the bottom end of the spray pipe 6 through a third pipe body 12, the left side and the right side of the top end of the box body 1 are fixedly provided with side plates, the pair of side plates are positioned at the rear part of the support rod 2, a reciprocating screw rod 13 is transversely and movably arranged between the pair of side plates, the outer part of the reciprocating screw rod 13 is sleeved with a slide block 14, the front side of the slide block 14 is fixedly provided with a rack 15, the lower part of the outer side of the support rod 2 is fixedly sleeved with a gear 16 meshed with the rack 15, the right end of the reciprocating screw rod 13 penetrates through the side plates to extend to the outer part, the left end of the rotary rod 10 penetrates through the shell 9 to extend to the outer part, the left end of the rotary rod 10 and the right end of the reciprocating screw rod 13 are both fixedly provided with first chain wheels 17, the two first chain wheels 17 are connected through a first chain belt, a handle is arranged above the back surface of the box body 1, the back surface of the box body 1 is provided with a disinfection mechanism 18, the disinfection mechanism 18 comprises a pair of vertical plates, and the vertical plates which are fixedly arranged above the left side of the back surface of the box body 1, horizontal movable mounting has actuating lever 1801 between a pair of riser, the left end of actuating lever 1801 passes the riser and extends to its outside, the left end of reciprocal lead screw 13 passes the curb plate and extends to its outside, the equal fixed mounting of the left end of reciprocal lead screw 13 and actuating lever 1801 has second sprocket 1802, connect through the second chain belt between two second sprockets 1802, the fixed cover in outside of actuating lever 1801 is equipped with drive wheel 1803, drive wheel 1803 specifically is the setting of cam member, make and to drive its decline when drive wheel 1803 rotates to its protruding end and ejector pin 1805 contact, thereby make and drive the piston decline.

A piston cylinder 1804 is fixedly mounted on the back surface of the box body 1 and below the driving wheel 1803, a piston is arranged inside the piston cylinder 1804, a top end 1805 is fixedly mounted in the middle of the top end of the piston, the top end of the top end 1805 penetrates through the piston rod 1804 and extends to the outside to be abutted against the driving wheel 1803, a pressing plate 1806 is fixedly sleeved above the outside of the top end 1805, a spring is sleeved outside the top end 1805 and between the pressing plate 1806 and the piston cylinder 1804, a storage box 1807 is fixedly mounted on the lower portion of the back surface of the box body 1, the middle portion of the bottom end of the piston cylinder 1804 is communicated with the inside of the storage box 1807 through a drawing pipe, a first valve body 1808 is arranged inside the drawing pipe, an adding pipe is arranged on the right side of the top end of the storage box 1807, a second pipe cover is connected with the top end of the screw thread of the adding pipe, an injection pipe 1809 is fixedly mounted on the lower portion of the right side of the piston cylinder 1804 and communicated with the inside of the injection pipe 1809, a second valve body 1810 is arranged inside 1810, the first valve body 1808 and the second valve body 1810 are specifically arranged as one-way valve body, when the piston descends, the disinfectant in the piston cylinder 1804 is squeezed outwards at the moment, so that the first valve body 1808 is closed, the second valve body 1810 is opened, the disinfectant enters the box body 1812 through the injection pipe 1809 and the pressing pipe 1811 and is filled instantly, so that the second spray head 1813 is pressurized to be opened and sprayed out to sterilize the handle, when the piston ascends, the first valve body 1808 is opened, the second valve body 1810 is closed, and the disinfectant in the storage box 1807 is sucked into the piston cylinder 1804 to be replenished.

The upper parts of the left side and the right side of the injection pipe 1809 are fixedly provided with press-in pipes 1811 which are communicated, the top end of the press-in pipe 1811 is fixedly provided with a box body 1812, the two box bodies 1812 are respectively positioned at the two sides of the handle, the inner side of the box body 1812 is provided with a plurality of pairs of spray holes from top to bottom, the spray holes are internally provided with second spray heads 1813, when the reciprocating screw 13 rotates, the second chain wheel 1802 can be driven to rotate, so that the second chain wheel 1802 below is driven to rotate through a second chain belt, the drive rod 1802 rotates, so that the drive wheel 1803 is driven to descend when the convex end of the drive wheel 1803 is contacted with the ejector rod 1805, so that the piston is driven to descend, the press plate 1806 is driven to compress the spring to deform, so that an acting force is generated, when the drive wheel 1803 rotates, the convex end of the drive plate 1806 is separated from the ejector rod 1805, the spring releases the acting force to drive the press plate 1806 to ascend, so that the ejector rod 1805 is reset, so that the piston ascends, when the piston descends, the disinfectant in the piston cylinder 1804 is squeezed outwards to enable the first valve body 1808 to be closed, the second valve body 1810 is opened, the disinfectant enters the box body 1812 through the injection pipe 1809 and the pressing pipe 1811 to be filled instantly, so that the second spray head 1813 is pressurized to be opened and sprayed out to achieve disinfection of the handle, when the piston ascends, the first valve body 1808 is opened, the second valve body 1810 is closed, and the disinfectant in the storage box 1807 is sucked into the piston cylinder 1804 to achieve replenishment.

The working principle is as follows: when the device is used, the knob 5 can be reversely rotated to drive the rubber pad to leave the mounting frame 3, the hand wheel can be rotated to drive the round rod 4 to rotate to realize the rotation of the spray pipe 6 to realize the angle adjustment, after the completion, the knob 5 can be forwardly rotated to drive the rubber pad to abut against the mounting frame 3 to realize the angle fixation, the first spray head 7 can be rotated to separate from the spray pipe 6 to realize the disassembly of the first spray head 7, then the new first spray head 7 can be rotatably combined with the spray pipe 6 to realize the replacement of the spray pipe 6, the water pump 8 is started to work, the water in the box body 1 is pumped out through the first pipe body, then the water enters the shell body 9 through the second pipe body, enters the third pipe body 12 and enters the spray pipe 6 to be sprayed out from the first spray head 7, when the water enters the shell body 9, the rotating plate 11 is impacted to rotate to drive the rotating rod 10 to rotate, so as to realize the rotation of the connected first chain wheel 17, and the rotation of the first chain wheel 17 above is driven through the first chain belt to realize the rotation of the reciprocating screw 13, the reciprocating screw 13 rotates to drive the sliding block 14 and the rack 15 to do reciprocating motion left and right so as to drive the gear 16 and the support rod 2 to swing along with the reciprocating screw, so that the mounting rack 3 is driven to swing along with the reciprocating screw to realize continuous swinging of the position of the first spray head 7, thereby expanding the spraying coverage range and avoiding swinging manually, time and labor are saved, when the reciprocating screw 13 rotates, the connected second chain wheel 1802 is driven to rotate, so that the second chain wheel 1802 below is driven to rotate through a second chain belt to realize the rotation of the drive rod 1802 so as to drive the drive wheel 1803 to continuously rotate, when the drive wheel 1803 rotates until the convex end of the drive wheel contacts with the ejector rod 1805, the drive wheel is driven to descend, so that the drive piston is driven to simultaneously drive the pressing plate 1806 to descend to compress the spring to deform the spring to generate acting force, when the drive wheel 1803 rotates until the convex end of the drive plate 1806 to separate from the ejector rod 1805, the spring releases acting force to drive the pressing plate 1806 to ascend and restore to realize the restoration of the ejector rod 1805, when the piston descends, the disinfectant in the piston cylinder 1804 is squeezed outwards to enable the first valve body 1808 to be closed, the second valve body 1810 is opened, the disinfectant enters the box body 1812 through the injection pipe 1809 and the pressing pipe 1811 to be filled instantly, so that the second spray head 1813 is pressurized to be opened and sprayed out to achieve disinfection of the handle, when the piston ascends, the first valve body 1808 is opened, the second valve body 1810 is closed, and the disinfectant in the storage box 1807 is sucked into the piston cylinder 1804 to achieve replenishment.

The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.

Claims

1. The utility model provides a teaching is with automatic sprinkler head that sprays water that drenches that has removable shower nozzle, includes box (1), its characterized in that, the top left side of box (1) is equipped with the filler pipe and threaded connection has first tube cap, the vertical movable mounting in top middle part of box (1) has bracing piece (2), the top fixed mounting of bracing piece (2) has mounting bracket (3), the equal movable mounting of the left and right sides inner wall of mounting bracket (3) has round bar (4), two between round bar (4) the common fixed mounting have spray tube (6), the left end of left round bar (4) passes mounting bracket (3) and extends to its outside fixed mounting have a hand wheel, the right-hand member of right side round bar (4) passes mounting bracket (3) and extends to its outside threaded connection has knob (5), the left side of knob (5) is equipped with the rubber pad, the front side of spray pipe (6) is connected with a first spray head (7) through threads, the right lower part of box body (1) is fixedly provided with a water pump (8) through an installation shell, the bottom of water pump (8) is communicated with the right lower part of box body (1) through a first pipe body, the right upper part of box body (1) is fixedly provided with a shell (9) through a pair of fixed plates, the top end of water pump (8) is communicated with the bottom end of shell (9) through a second pipe body, the inside of shell (9) is transversely movably provided with a rotating rod (10), the outer side of rotating rod (10) is equidistantly surrounded by a rotating plate (11), the middle part of the top end of shell (9) is communicated with the bottom rear side of spray pipe (6) through a third pipe body (12), the left side plate and the right side plate are fixedly arranged on the left side and the right side of the top end of box body (1), and the side plates are located behind supporting rod (2), it is a pair of horizontal movable mounting has reciprocal lead screw (13) between the curb plate, the outside cover of reciprocal lead screw (13) is equipped with slider (14), the front side fixed mounting of slider (14) has rack (15), the outside lower part fixed mounting of bracing piece (2) is equipped with gear (16) with rack (15) meshing, the right-hand member of reciprocal lead screw (13) passes the curb plate and extends to its outside, the left end of bull stick (10) passes casing (9) and extends to its outside, the equal fixed mounting of the left end of bull stick (10) and the right-hand member of reciprocal lead screw (13) has first sprocket (17), two connect through first chain belt between first sprocket (17), the back top of box (1) is equipped with the handle, the back of box (1) is equipped with disinfection mechanism (18).

2. The automatic sprinkler head sprinkler system with replaceable sprinkler head for teaching of claim 1, characterized in that the disinfection mechanism (18) comprises a pair of vertical plates fixedly installed at the upper left of the back surface of the box body (1), a driving rod (1801) is transversely movably installed between the pair of vertical plates, the left end of the driving rod (1801) passes through the vertical plates and extends to the outside thereof, the left end of the reciprocating screw rod (13) passes through the side plates and extends to the outside thereof, the left ends of the reciprocating screw rod (13) and the driving rod (1801) are both fixedly installed with a second chain wheel (1802), two of the second chain wheels (1802) are connected through a second chain belt, the outside of the driving rod (1801) is fixedly sleeved with a driving wheel (1803), a piston cylinder (1804) is fixedly installed at the back surface of the box body (1) and below the driving wheel (1803), the inside of piston cylinder (1804) is equipped with the piston, the top middle part fixed mounting of piston has ejector pin (1805), the top of ejector pin (1805) is passed piston cylinder (1804) and is extended to its outside and contradict with drive wheel (1803), the fixed clamp plate (1806) of being equipped with in outside top of ejector pin (1805), the outside of ejector pin (1805) just is located and is equipped with the spring between clamp plate (1806) and piston cylinder (1804), the back lower part fixed mounting of box (1) has and deposits case (1807), the bottom middle part of piston cylinder (1804) is through taking out the pipe and depositing the inside intercommunication of case (1807), the inside of taking out the pipe is equipped with first valve body (1808), the top right side of depositing case (1807) is equipped with and adds the pipe, the top threaded connection who adds the pipe has the second tube cap, the right side lower part fixed mounting of piston cylinder (1804) has injection tube (1809) rather than the inside intercommunication, the inner part of the injection pipe (1809) is provided with a second valve body (1810), the upper parts of the left side and the right side of the injection pipe (1809) are fixedly provided with communicated press-in pipes (1811), the top end of each press-in pipe (1811) is fixedly provided with a box body (1812), the two box bodies (1812) are respectively positioned on two sides of the handle, the inner side of each box body (1812) is provided with a plurality of pairs of spray holes from top to bottom, and second spray heads (1813) are arranged in the spray holes.

3. A deluge automatic sprinkler device with replaceable sprinkler head for teaching according to claim 2, characterised in that the first valve body (1808) and the second valve body (1810) are arranged in particular as one-way valve members.

4. Educational automatic sprinkler with replaceable sprinkler head, according to claim 2, characterized in that the driving wheel (1803) is embodied as a cam member.

5. A deluge automatic sprinkler with replaceable sprinkler head for teaching according to claim 1, characterised in that the turning bar (10) is located obliquely behind the top end of the second pipe body.