CN113368451B - Fire hydrant for fire engineering - Google Patents

Abstract

The invention discloses a fire hydrant for fire engineering, which comprises an installation box, wherein the installation box comprises a top plate, a bottom plate, a first side plate and a second side plate, a transverse plate is fixedly arranged between the first side plate and the second side plate, a positioning plate is arranged between the transverse plate and the top plate and is respectively and rotatably connected with the transverse plate and the top plate, a hydrant body is fixedly arranged on the bottom plate and is connected with a first water valve, water outlets are fixedly arranged on two sides of the hydrant body, a water hose is arranged on one side of the positioning plate, a hanging ring is fixedly arranged on the positioning plate, a first spray nozzle is arranged in the hanging ring, a first connector and a second connector are respectively fixed at two ends of the water hose, when the fire hydrant is used, the installation box is fixedly embedded in a wall body, when a fire condition occurs on one side of the wall body, the positioning plate is rotated to enable the water hose to be positioned on one side of the positioning plate close to the fire condition, two ends of the water hose are respectively connected with the water outlets and the first spray nozzle, then the first water valve is opened to extinguish the fire, the fire extinguishing on the two sides of the wall body is fast and convenient.

Description

Fire hydrant for fire engineering

Technical Field

The invention relates to the field of fire engineering, in particular to a fire hydrant for fire engineering.

Background

A fire hydrant, also known as fire hydrant, is a fixed fire-fighting equipment, mainly used for controlling combustible substances, isolating combustion-supporting substances and eliminating ignition sources, and is divided into an indoor fire hydrant and an outdoor fire hydrant. Fire hydrant is an important fire fighting equipment for fighting fire. The fire hydrant suit is generally formed by combining a fire box, a fire hose, a water gun, a connecting buckle, a bolt, a clamp and the like, and the fire hydrant is mainly used for a fire truck to take water from a municipal water supply network or an outdoor fire water supply network to put out a fire or can be directly connected with the water hose and the water gun to discharge water to put out a fire.

The related art can refer to chinese patent with publication number CN107998570A and discloses a novel indoor fire hydrant case, which comprises a case body, the fire hydrant, join in marriage the hosepipe and save oneself the formula fire hose, be equipped with on the fire hydrant with join in marriage hosepipe matched with fire hydrant interface, still include the fixed plate, a frame, rocking arm and coiling device, the lower extreme of box is equipped with the baffle, the one side of baffle is arranged in to the hose, the installation in the upper end one side of box of fixed plate liftable, the frame mounting is in the outside of fixed plate, the one end of rocking arm is through pivot and frame attach, it is connected with the other end of rocking arm to coil the device, the one end and the fire hose of saving oneself of formula fire hose are connected, the other end of the formula fire hose of saving oneself is convoluteed on coiling the device.

To the correlation technique among the above-mentioned, the inventor thinks, above-mentioned device is in actual use, fixes the box on the wall of wall body one side, and when the condition of a fire took place for the opposite side of wall body, the operator need walk around the wall body with the internal water distribution area of box and fire hose and remove the department of catching fire and put out a fire, if the wall body is longer, it is not enough to easily appear water distribution area and fire hose length, can't remove the department of catching fire and put out a fire, when the condition of a fire took place for the one side that deviates from the box when the wall body, it is comparatively inconvenient to put out a fire.

Disclosure of Invention

In order to put out a fire to the both sides of wall body in order to make things convenient for, this application provides a fire hydrant for fire engineering.

The application provides a fire hydrant for fire-fighting engineering adopts following technical scheme:

a fire hydrant for fire engineering comprises an installation box, wherein the installation box comprises a top plate, a bottom plate, a first side plate and a second side plate, a transverse plate is fixedly arranged between the first side plate and the second side plate, a positioning plate is arranged between the transverse plate and the top plate and is respectively connected with the transverse plate and the top plate in a rotating manner, a plurality of positioning assemblies for fixing the position of the positioning plate are fixedly arranged at the lower end part of the positioning plate, a hydrant body is fixedly arranged on the bottom plate and is connected with a first water valve, water outlets are fixedly arranged at two sides of the hydrant body, a convex column is arranged at one side of the positioning plate, a water hose is sleeved on the outer wall of the convex column, a hanging ring is fixedly arranged at the position, close to the convex column, a first spray nozzle matched with the water hose is arranged in the hanging ring, a first connector matched with the water outlets is fixedly arranged at one end of the water hose, a second connector matched with the first spray nozzle is fixedly arranged at the other end of the water hose, safety doors are hinged at two sides of the second side plate, locking handles are fixedly connected with locking handles, the first side plate is fixedly provided with a lock catch matched with the locking handle.

Through adopting above-mentioned technical scheme, the fire hydrant is when using, and the installation box is fixed to be inlayed and is established in the wall body, when the condition of a fire appears in certain one side of wall body, opens the emergency exit, rotates the locating plate, makes the hosepipe be located one side that the locating plate is close to the condition of a fire, links together the both ends of hosepipe with delivery port and first shower nozzle respectively, then removes first shower nozzle and is close to the department of catching fire, opens first water valve and can put out a fire to the department of catching fire, extinguishes comparatively swiftly convenient to the both sides of wall body.

Optionally, the bolt body deviates from the one end fixedly connected with raceway of first water valve, and the raceway is connected with the second water valve, and locating plate upper end rotates and is connected with the reference column, and the reference column is around being equipped with the hose, and the reference column deviates from the spacing dish of one end fixedly connected with of locating plate, the one end and the raceway threaded connection of hose, and the other end of hose is connected with the second shower nozzle.

Through adopting above-mentioned technical scheme, when the condition of a fire appears in wall body one side, rotate the locating plate, make the reference column be located and be close to condition of a fire one side, take off the hose and raceway threaded connection, remove the second shower nozzle and be close to condition of a fire department, open first water valve and second water valve and can put out a fire to the department of catching fire, can use hosepipe and hose to put out a fire to the department of catching fire simultaneously, be favorable to practicing thrift the time of putting out a fire, improve the efficiency of putting out a fire.

Optionally, the locating component comprises a fixing piece fixedly connected with the locating plate, a vertical rod slidably connected with the fixing piece, and a round piece fixedly arranged at the upper end of the vertical rod, a spring is fixedly arranged between the round piece and the fixing piece, round grooves matched with the vertical rod are formed in the two ends of the transverse plate, and through holes are formed in the two ends of the locating plate close to the fixing piece.

Through adopting above-mentioned technical scheme, when the condition of a fire appears, carry earlier and draw the disk, separate montant and circular slot, rotate the locating plate again for hosepipe and hose are located and are close to condition of a fire department, insert the circular slot that corresponds the position with the montant again, realize the fixed of locating plate position, prevent that the locating plate from taking place random swing and influencing operating personnel to put out a fire.

Optionally, the convex column includes thick post and thin post, thin post be located thick post and with thick post sliding connection, thin post and locating plate fixed connection, thick post is close to the one end of locating plate and is connected with the bolt, thin post is close to locating plate department and sets up the screw with bolt looks adaptation.

Through adopting above-mentioned technical scheme, take off thick post after putting out a fire, the hosepipe winding after the fifty percent discount is on thick post, overlaps thick post on thin post again, is convenient for prevent that the hosepipe from taking place loosely at the winding in-process, accomodates comparatively convenient to the hosepipe.

Optionally, the lower end of the bolt body is fixedly connected with a water return pipe, and the water return pipe is connected with a water return valve.

Through adopting above-mentioned technical scheme, after putting out a fire, discharge the water of key body upper end from the wet return through the return valve, prevent that it freezes to take place for sewage at low temperature environment, but the guarantee fire hydrant normal use under the low temperature environment of being convenient for.

Optionally, the inner wall of the safety door is rotatably connected with two parallel rollers, and a gap between the rollers is matched with the water band.

By adopting the technical scheme, the folded water hose passes through the gap between the two rollers, so that water in the water hose can be discharged quickly.

Optionally, the four end corners of the outer walls of the first side plate and the second side plate are fixedly connected with inclined reinforcing rods.

Through adopting above-mentioned technical scheme, the stiffener slope is fixed in the wall body, is convenient for strengthen the joint strength of install bin and wall body.

Optionally, a temporary storage box is fixedly arranged below the installation box, and a fire extinguisher is arranged in the temporary storage box.

Through adopting above-mentioned technical scheme, operating personnel can directly put out a fire through the fire extinguisher, is favorable to further improving the fire extinguishing efficiency of fire hydrant, improves the many suitability of fire hydrant.

In summary, the present application includes at least one of the following beneficial technical effects:

1. when the fire hydrant is used, the installation box is fixedly embedded in the wall body, when a fire condition occurs on one side of the wall body, the safety door is opened, the positioning plate is rotated to enable the water hose to be positioned on one side, close to the fire condition, of the positioning plate, two ends of the water hose are respectively connected with the water outlet and the first spray head together, then the first spray head is moved to a position close to a fire, the fire can be extinguished by opening the first water valve, and the fire can be extinguished on two sides of the wall body quickly and conveniently;

2. when a fire occurs on one side of the wall body, the positioning plate is rotated to enable the positioning column to be positioned on the side close to the fire, the hose is taken down to be in threaded connection with the water delivery pipe, the second spray head is moved to the position close to the fire, the first water valve and the second water valve are opened to extinguish the fire, the water hose and the hose can be used for extinguishing the fire at the same time, the fire extinguishing time is saved, and the fire extinguishing efficiency is improved;

3. when the condition of a fire appears, carry earlier and draw the disk, with montant and circular slot separation, rotate the locating plate again for hosepipe and hose are located and are close to condition of a fire department, insert the montant again and correspond the circular slot of position in, realize the fixed of locating plate position, prevent that the locating plate from taking place random swing and influencing operating personnel to put out a fire.

Drawings

FIG. 1 is a schematic overall structure diagram of a fire hydrant for fire fighting engineering according to an embodiment of the present invention.

Fig. 2 is an enlarged schematic view of a portion a in fig. 1.

Fig. 3 is an enlarged schematic view of a portion B in fig. 1.

Fig. 4 is intended to highlight the position schematic of the stud and the hose.

Description of the reference numerals: 1. installing a box; 2. a top plate; 3. a base plate; 4. a first side plate; 5. a second side plate; 6. a transverse plate; 7. positioning a plate; 8. a positioning assembly; 9. a plug body; 10. a first water valve; 11. a water outlet; 12. a convex column; 13. a water hose; 14. hanging a ring; 15. a first nozzle; 16. a first connector; 17. a second connector; 18. a safety door; 19. locking the handle; 20. locking; 21. a water delivery pipe; 22. a second water valve; 23. a hose; 24. a limiting disc; 25. a second nozzle; 26. a fixing sheet; 27. a vertical rod; 28. a wafer; 29. a spring; 30. a circular groove; 31. a through hole; 32. carrying out thick column; 33. a thin column; 34. a bolt; 35. a water return pipe; 36. a water return valve; 37. a roller; 38. a reinforcing bar; 39. a temporary storage box; 40. a fire extinguisher.

Detailed Description

The present application is described in further detail below with reference to the accompanying drawings.

The embodiment of the application discloses fire hydrant for fire-fighting engineering.

Examples

Referring to fig. 1, a fire hydrant for fire engineering, including install bin 1, install bin 1 includes roof 2, bottom plate 3, first curb plate 4 and second curb plate 5, the both ends of roof 2 respectively with first curb plate 4 and 5 fixed connection of second curb plate, the both ends of bottom plate 3 respectively with first curb plate 4 and 5 fixed connection of second curb plate, fire hydrant for fire engineering is when using, first curb plate 4 and 5 width of second curb plate are the same with wall thickness, install bin 1 inlays to be established in the wall body, 4 outer walls of first curb plate and 5 outer walls of second curb plate and wall body fixing. The stiffener 38 of the equal fixedly connected with slope of four end angles of the 4 outer walls of first curb plate and the 5 outer walls of second curb plate, the stiffener 38 slope is fixed in the wall body to strengthen the joint strength of install bin 1 and wall body, improve the whole steadiness of install bin 1.

Referring to fig. 1, the second side plate 5 is hinged with safety doors 18 along the two sides of the width direction, and the safety doors 18 are made of transparent glass, so that operators can observe the inside condition of the installation box 1 conveniently. The emergency exit 18 fixedly connected with locking handle 19, first curb plate 4 is fixed with the hasp 20 with locking handle 19 looks adaptation, and when the condition of a fire appeared in one side of install bin 1, operating personnel rotated locking handle 19 earlier, made locking handle 19 and hasp 20 separation, opened emergency exit 18.

Referring to fig. 1 and 2, install diaphragm 6 between first curb plate 4 and the second curb plate 5, diaphragm 6 along length direction's both ends respectively with first curb plate 4 and 5 fixed connection of second curb plate, install locating plate 7 between diaphragm 6 and the roof 2, locating plate 7 along direction of height's both ends respectively with diaphragm 6 up end center department with roof 2 down end center department rotate to be connected, one side of locating plate 7 is equipped with projection 12, 12 outer wall covers of projection have hosepipe 13, operating personnel rotates locating plate 7, make hosepipe 13 be located one side that locating plate 7 is close to the condition of a fire.

Referring to fig. 2 and 3, an operator takes down a water hose 13 from a convex column 12 (refer to fig. 1), unreels the water hose 13, the upper end face of a bottom plate 3 is fixedly provided with a bolt body 9, the bolt body 9 is positioned between the bottom plate 3 and a transverse plate 6, the bolt body 9 is connected with a first water valve 10, two sides of the bolt body 9 are fixedly provided with water outlets 11, one end of the water hose 13 is fixedly provided with a first connecting head 16 matched with the water outlet 11, and the first connecting head 16 on the water hose 13 is connected with the water outlet 11 on one side, close to a fire, of the bolt body 9.

Referring to fig. 1 and 3, a hanging ring 14 is fixedly arranged at a position, close to a convex column 12, of a positioning plate 7, a first spray head 15 is arranged in the hanging ring 14, an operator takes the first spray head 15 off the hanging ring 14, a second connector 17 matched with the first spray head 15 is fixedly arranged at the other end of a water hose 13, the second connector 17 at the other end of the water hose 13 is connected with the first spray head 15, then the operator moves the first spray head 15 to a position close to a fire, and rotates a first water valve 10, so that water in a bolt body 9 is sprayed out from the first spray head 15 through the water hose 13, and the fire can be extinguished.

Referring to fig. 1 and 3, when the condition of a fire appears in wall body one side, operating personnel rotates locating plate 7, makes the reference column be located and is close to condition of a fire one side, and 7 upper ends of locating plate rotate and are connected with the reference column, and the reference column is around being equipped with hose 23, and operating personnel takes off hose 23 on the reference column again, unreels hose 23. The reference column deviates from spacing dish 24 of one end fixedly connected with of locating plate 7, and spacing dish 24 is convenient for carry on spacingly to hose 23, prevents that hose 23 from dropping loosely when twining the reference column. One end of the bolt body 9 deviating from the first water valve 10 is fixedly connected with a water pipe 21, the water pipe 21 is connected with a second water valve 22, one end of the hose 23 is in threaded connection with one end of the water pipe 21 deviating from the bolt body 9, and the other end of the hose 23 is connected with a second spray head 25. The hose 23 is in threaded connection with the water delivery pipe 21, the second spray head 25 is moved to a position close to the fire, the first water valve 10 and the second water valve 22 are opened, the fire is extinguished at the fire, the water hose 13 and the hose 23 can be used for extinguishing the fire at the fire, the fire extinguishing time can be saved, the fire extinguishing efficiency is improved, and property loss is reduced.

Referring to fig. 1 and 3, when a fire occurs on one side of the wall, an operator only needs to rotate the positioning plate 7 to enable the water hose 13 and the hose 23 to be located on one side close to the fire, then the water hose 13 is respectively connected with the first spray head 15 and the corresponding water outlet 11, the hose 23 is in threaded connection with the water pipe 21, the fire can be extinguished at the fire, and the fire extinguishing is fast and convenient. When the condition of a fire appears simultaneously in wall body both sides, operating personnel can use hosepipe 13 and hose 23 simultaneously, puts out a fire to the department of catching fire of wall body both sides respectively, and it is comparatively swift convenient to put out a fire to wall body both sides. After extinguishing the fire, operating personnel closes second water valve 22 and second water valve 22 earlier, separates hose 23 and raceway 21, empties the water in hose 23 again, twines hose 23 on the reference column at last.

Referring to fig. 1 and 2, two positioning assemblies 8 are fixedly arranged at the lower end of the positioning plate 7, each positioning assembly 8 comprises a fixing piece 26, a vertical rod 27 and a circular sheet 28, the fixing pieces 26 are fixedly connected to two ends of the positioning plate 7 along the length direction, the fixing piece 26 is positioned at the lower end part of the positioning plate 7 along the height direction, the vertical rod 27 penetrates through the fixing piece 26 and is connected with the fixing piece 26 in a sliding way, the circular sheet 28 is fixedly connected with the upper end part of the vertical rod 27, a spring 29 is arranged between the circular sheet 28 and the fixing piece 26, two ends of the spring 29 are respectively fixedly connected with the lower end surface of the circular sheet 28 and the upper end surface of the fixing piece 26, two ends of the transverse plate 6 are provided with circular grooves 30 matched with the vertical rod 27, when no fire occurs, the lower end of the vertical rod 27 is inserted into the corresponding circular groove 30 of the transverse plate 6 when the spring 29 is in a natural state, so that the relative position of the positioning plate 7 and the transverse plate 6 is fixed, and the positioning plate 7 is prevented from swinging randomly. Through holes 31 matched with hands of operators are formed in the positions, close to the fixing pieces 26, of the two ends of the positioning plate 7, and the through holes 31 facilitate the hands of operators to penetrate through to adjust the vertical rods 27.

Referring to fig. 1 and 2, when the condition of a fire appears, operating personnel is when using hosepipe 13 and hose 23 to put out a fire, operating personnel carries wafer 28 earlier, separate montant 27 and the circular slot 30 on the diaphragm 6, rotate locating plate 7 again, make hosepipe 13 and hose 23 be located near the condition of a fire department, carry wafer 28 again, make montant 27 shift up, it is corresponding with the circular slot 30 that corresponds the position on montant 27 and the diaphragm 6, loosen wafer 28 again, under the effect of spring 29 resilience force, montant 27 inserts in the circular slot 30 that corresponds, realize the fixed of locating plate 7 position, prevent that locating plate 7 from taking place random swing influence operating personnel and putting out a fire, make things convenient for sequent operating personnel to take off hosepipe 13 and hose 23 and put out a fire the department of catching a fire.

Referring to fig. 1 and 3, after putting out a fire, operating personnel closes first water valve 10, separate the both ends of hosepipe 13 with first shower nozzle 15 and delivery port 11 respectively, carrying out the fifty percent discount with hosepipe 13, emergency exit 18 inner wall rotates and is connected with two gyro wheels 37 that are parallel to each other, clearance and hosepipe 13 looks adaptation between the gyro wheel 37, hosepipe 13 after will fifty percent discount passes from the clearance between two gyro wheels 37, and then discharge the water in the hosepipe 13 fast, accomodate comparatively swiftly to hosepipe 13.

Referring to fig. 1 and 4, the convex column 12 includes a thick column 32 and a thin column 33, the thin column 33 is located in the thick column 32 and is slidably connected with the thick column 32, the thin column 33 is fixedly connected with the positioning plate 7, after the fire extinguishing is finished, an operator takes down the thick column 32, folds the water hose 13 in half, winds the folded water hose 13 on the thick column 32, and then sleeves the thick column 32 wound with the water hose 13 on the thin column 33. The one end that thick post 32 is close to locating plate 7 is connected with bolt 34, and thin post 33 is close to locating plate 7 department and sets up the screw with bolt 34 looks adaptation, and operating personnel is last with bolt 34 on the thick post 32 and the screw threaded connection on the thin post 33, prevents that hosepipe 13 from taking place loosely in the winding process, and it is comparatively convenient to place hosepipe 13 in install bin 1.

Referring to fig. 1 and 3, a water return pipe 35 is connected to the lower end of the hydrant 9, a water return valve 36 is connected to the water return pipe 35, and after fire extinguishing is completed, an operator opens the water return valve 36 to discharge water at the upper end of the hydrant 9 through the water return pipe 35, so that the water level in the hydrant 9 is lowered to a position below the water return pipe 35, thereby preventing the water in the hydrant 9 from freezing in a low-temperature environment and ensuring that the hydrant can be normally used in the low-temperature environment. The temporary storage box 39 is installed below the installation box 1, the fire extinguisher 40 is placed in the temporary storage box 39, and when the fire is small, an operator can directly extinguish the fire through the fire extinguisher 40.

The fire hydrant for the fire-fighting engineering in the embodiment of the application has the following implementation principle: when a fire occurs on one side of the wall body, an operator opens the safety door 18, rotates the positioning plate 7 to enable the water hose 13 and the hose 23 to be positioned on the side close to the fire, then takes the water hose 13 and the hose 23 down, unreels the water hose 13 and the hose 23 respectively, connects the first connector 16 on the water hose 13 with the water outlet 11 of the bolt body 9, takes the first spray head 15 down from the hanging ring 14, connects the second connector 17 at the other end of the water hose 13 with the first spray head 15, moves the first spray head 15 to the place close to the fire, rotates the first water valve 10 to enable water in the bolt body 9 to be sprayed out from the first spray head 15 through the water hose 13, and extinguishes the fire; the hose 23 is connected with the water delivery pipe 21 in a threaded manner, then the second spray nozzle 25 is moved to a position close to a fire situation, and the first water valve 10 and the second water valve 22 are opened to extinguish the fire at the fire place; when the condition of a fire appears simultaneously in wall body both sides, operating personnel can use hosepipe 13 and hose 23 simultaneously, puts out a fire to the department of catching fire of wall body both sides respectively, and it is comparatively swift convenient to put out a fire to wall body both sides, and then practices thrift the time of putting out a fire, improves fire extinguishing efficiency.

The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims (7)

1. The utility model provides a fire hydrant for fire-fighting engineering, includes install bin (1), its characterized in that: the mounting box (1) comprises a top plate (2), a bottom plate (3), a first side plate (4) and a second side plate (5), a transverse plate (6) is fixedly arranged between the first side plate (4) and the second side plate (5), a positioning plate (7) is arranged between the transverse plate (6) and the top plate (2), the positioning plate (7) is respectively rotatably connected with the transverse plate (6) and the top plate (2), a plurality of positioning assemblies (8) used for fixing the position of the positioning plate (7) are fixedly arranged at the lower end of the positioning plate (7), a bolt body (9) is fixedly arranged on the bottom plate (3), a first water valve (10) is connected with the bolt body (9), water outlets (11) are fixedly arranged at two sides of the bolt body (9), a convex column (12) is arranged at one side of the positioning plate (7), a water hose (13) is sleeved on the outer wall of the convex column (12), a hanging ring (14) is fixedly arranged at a position, a first spray nozzle (15) matched with the water hose (13) is arranged in the hanging ring (14), one end of the water hose (13) is fixedly provided with a first connector (16) matched with the water outlet (11), the other end of the water hose (13) is fixedly provided with a second connector (17) matched with the first spray head (15), two sides of the second side plate (5) are hinged with safety doors (18), the safety doors (18) are fixedly connected with locking handles (19), and the first side plate (4) is fixedly provided with a lock catch (20) matched with the locking handles (19); locating component (8) include with locating plate (7) fixedly connected with stationary blade (26), with stationary blade (26) sliding connection's montant (27), set firmly disk (28) in montant (27) upper end, spring (29) have set firmly between disk (28) and stationary blade (26), circular slot (30) with montant (27) looks adaptation are seted up at the both ends of diaphragm (6), through-hole (31) have been seted up near stationary blade (26) department at the both ends of locating plate (7).

2. A fire hydrant for fire fighting engineering according to claim 1, characterized in that: the utility model discloses a water valve, including the bolt body (9), the one end fixedly connected with raceway (21) that deviates from first water valve (10), raceway (21) are connected with second water valve (22), locating plate (7) upper end rotates and is connected with the reference column, the reference column is around being equipped with hose (23), the reference column deviates from spacing dish of one end fixedly connected with (24) of locating plate (7), the one end and raceway (21) threaded connection of hose (23), the other end of hose (23) is connected with second shower nozzle (25).

3. A fire hydrant for fire fighting engineering according to claim 1, characterized in that: the convex column (12) comprises a thick column (32) and a thin column (33), the thin column (33) is located in the thick column (32) and is in sliding connection with the thick column (32), the thin column (33) is fixedly connected with the positioning plate (7), one end, close to the positioning plate (7), of the thick column (32) is connected with a bolt (34), and a screw hole matched with the bolt (34) is formed in the position, close to the positioning plate (7), of the thin column (33).

4. A fire hydrant for fire fighting engineering according to claim 1, characterized in that: the lower end part of the bolt body (9) is fixedly connected with a water return pipe (35), and the water return pipe (35) is connected with a water return valve (36).

5. A fire hydrant for fire fighting engineering according to claim 1, characterized in that: the inner wall of the safety door (18) is rotatably connected with two parallel rollers (37), and a gap between the rollers (37) is matched with the water hose (13).

6. A fire hydrant for fire fighting engineering according to claim 1, characterized in that: four end angles of the outer walls of the first side plate (4) and the second side plate (5) are fixedly connected with inclined reinforcing rods (38).

7. A fire hydrant for fire fighting engineering according to claim 1, characterized in that: a temporary storage box (39) is fixedly arranged below the installation box (1), and a fire extinguisher (40) is arranged in the temporary storage box (39).

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