CN111530010A

CN111530010A - Water-saving fire control water supply system

Info

Publication number: CN111530010A
Application number: CN202010335667.2A
Authority: CN
Inventors: 张会杰; 王湘玺
Original assignee: Tianjin Citic Yanheng Electromechanical Engineering Co ltd
Current assignee: Tianjin Citic Yanheng Electromechanical Engineering Co ltd
Priority date: 2020-04-25
Filing date: 2020-04-25
Publication date: 2020-08-14
Anticipated expiration: 2040-04-25
Also published as: CN111530010B

Abstract

The invention discloses a water-saving fire-fighting water supply system, belonging to the technical field of emergency fire fighting, and the key point of the technical scheme is that the water-saving fire-fighting water supply system comprises a water supply pipeline fixedly connected with a fire hydrant, wherein the water supply pipeline is buried underground, and the water-saving fire-fighting water supply system is characterized in that: the utility model discloses a fire hydrant, including water supply pipe, storage tank upper cover, the pivot of opening and closing valve, the pivot is close to the one end of opening and closing valve and is pegged graft the cooperation with the opening and closing valve, the one end that the opening and closing valve was kept away from to the pivot is provided with the locking subassembly, the locking subassembly includes lock sleeve and lock core, the lock sleeve cover is established in the pivot, the bottom surface fixed connection of lock sleeve and storage tank, lock core fixed connection is served near one of lock sleeve in the pivot, the lock core uses with the lock sleeve cooperation, be connected with on the lock core and be used for driving pivot pivoted unblock subassembly through the lock core, reach the effect that reduces the waste of fire-fighting water.

Description

Water-saving fire control water supply system

Technical Field

The invention relates to the field of emergency fire fighting equipment, in particular to a water-saving fire fighting water supply system.

Background

A fire hydrant, also known as a fire hydrant, is a common fire fighting device used for emergency treatment of sudden fires.

The utility model provides a current fire hydrant for emergency of setting in community, includes the subaerial fire hydrant body of fixed connection, the fire hydrant body is the post, has seted up a plurality of intake on the columnar fire hydrant body, and intake department is provided with the water intaking valve, and the water intaking valve is linked with fire hydrant body screw thread. When the fire hydrant is used, the water taking valve is screwed out of the fire hydrant body, and then one end of the fire-fighting water pipe is in threaded connection with the fire hydrant body, so that water taking is achieved.

However, the structure of the fire hydrant still has the following problems that the opening mode of the water taking valve is too simple and easy, and residents in the community can take emergency fire-fighting water privately, so that the serious waste of the fire-fighting water is caused.

Disclosure of Invention

Aiming at the defects in the prior art, the invention aims to provide a water-saving fire-fighting water supply system to achieve the effect.

The technical purpose of the invention is realized by the following technical scheme:

the utility model provides a water-saving fire control water supply system, includes the water supply pipe with fire hydrant fixed connection, and water supply pipe buries underground, its characterized in that: the utility model discloses a fire hydrant, including water supply pipe, valve, storage tank upper cover, the pivot of valve switching, the pivot is close to the one end of valve and the cooperation of pegging graft of valve, the one end of valve is kept away from in the pivot is provided with the locking subassembly, the locking subassembly includes lock sleeve and lock core, the lock sleeve cover is established in the pivot, the bottom surface fixed connection of lock sleeve and storage tank, lock core fixed connection is served near the pivot one of lock sleeve, the lock core uses with the lock sleeve cooperation, be connected with on the lock core and be used for driving pivot pivoted unblock subassembly through the lock core.

By adopting the technical scheme, when a fire disaster occurs, fire fighting workers in a community can drive the lock cylinder to rotate through the unlocking assembly, so that the rotating shaft is rotated, and the opening and closing valve is opened through the rotating shaft, so that the water supply pipeline is communicated with the fire hydrant, and water is supplied to the fire hydrant; when no fire occurs, firefighters in the community can separate the unlocking assembly from the lock cylinder and take the unlocking assembly away, residents in the community cannot rotate the lock cylinder without the aid of the unlocking assembly, the locking assembly is opened and is communicated with the water supply pipeline, water cannot be taken from the fire hydrant even if the fire hydrant is opened, and accordingly fire-fighting water waste caused by the fact that the fire hydrant is opened for taking water privately is avoided; the baffle plate can cover the containing groove when no fire occurs, so that the road surface is kept flat.

The invention is further provided that the unlocking assembly comprises an unlocking rod, a pressure plate and a casing, the unlocking rod is matched with the lock cylinder for use, the pressure plate is fixedly connected with one end of the unlocking rod close to the lock cylinder, the casing is sleeved on the pressure plate and is rotationally connected with the pressure plate, and the casing is matched with the lock sleeve for use and is in threaded connection.

Through adopting above-mentioned technical scheme, when there is the conflagration to take place, can insert the first inserting groove of lock core with the first grafting piece of unblock lever, rotate the cover shell afterwards, make cover shell and lock sleeve threaded connection, at the in-process of the cover shell of screwing, thereby the pressure disk can push down the lock core and make the lock core promote pivot downwardly moving, and make the second grafting piece insert the second inserting groove, rotate unblock lever afterwards, thereby the unblock lever drives the lock core and rotates and drive the pivot rotation, the pivot drives the case rotation of open and close valve, thereby open and close valve, make water supply pipe and fire hydrant be linked together.

The invention is further provided that one end of the unlocking rod close to the lock cylinder is fixedly connected with a first insertion block, and one end of the lock cylinder close to the lock rod is provided with a first insertion groove matched with the insertion block for use.

Through adopting above-mentioned technical scheme, first grafting piece uses with the cooperation of first inserting groove, can realize the grafting cooperation of unblock pole and lock core, only when the first grafting piece of unblock pole inserts the lock core, just accessible lock core drives the pivot and rotates to realize unblock locking subassembly.

The invention is further provided that the open-close valve is a ball valve, one end of the rotating shaft close to the open-close valve is fixedly connected with a second insertion block, and a valve core of the open-close valve is provided with a second insertion groove which is in insertion fit with the second insertion block.

Through adopting above-mentioned technical scheme, second grafting piece is pegged graft with the cooperation of pegging graft of second inserting groove, can drive the case rotation of opening and closing valve through the pivot when second grafting piece inserts the second inserting groove to realize the switching of opening and closing valve.

The invention is further provided with a pressure spring arranged between the lock core and the lock sleeve, the pressure spring is arranged in the lock sleeve, and two free ends of the pressure spring are respectively abutted against the lock core and the lock sleeve.

Through adopting above-mentioned technical scheme, the setting of pressure spring, can be when not linking to each other locking subassembly and unblock subassembly, it is ejecting from the lock tube to follow the lock tube, thereby with pivot lifting one end distance, and take out second grafting piece from the second inserting groove, even rotate the case that the lock tube also can't drive the open-close valve through the pivot this moment and rotate, thereby can't open the closing valve, and impress the lock tube into the lock tube, make second grafting piece insert the second inserting groove, suitable application of force point does not exist on the lock tube this moment, it is rotatory to make the lock tube drive the pivot, thereby further increase the degree of difficulty of stealing the fire water.

The invention is further set up in that a rotating assembly is arranged between the pressure plate and the sleeve, the rotating assembly comprises a rotating disc and balls, the rotating disc is sleeved on the pressure plate and is fixedly connected with the outer circumferential surface of the pressure plate, the inner circumferential surface of the sleeve shell is provided with a rotating groove matched with the rotating disc, the width of the rotating groove is larger than the thickness of the rotating disc, the balls are provided with a plurality of balls, the balls penetrate through the rotating disc along the direction parallel to the axis of the rotating disc and are connected with the rotating disc in a sliding manner, and the balls are abutted against the side wall of the.

Through adopting above-mentioned technical scheme, the carousel uses with the ball cooperation, can realize on the one hand that the cover shell is connected with the rotation of pressure disk, and another reverse side is because the ball rotates with the carousel to be connected for the carousel is when the cover shell internal rotation, and the friction between ball and the cover shell is rolling friction, thereby makes the rotation between pressure disk and the carousel more smooth, thereby when the conflagration takes place, community's fire fighter can open the open-close valve through the unblock subassembly fast, thereby strives for the time of fire rescue.

The invention is further provided with a sliding component arranged between the unlocking rod and the pressure plate, wherein the sliding component comprises a sliding groove and a sliding block, the sliding groove is formed in the inner wall of the pressure plate close to the unlocking rod, the sliding block is arranged in the sliding groove, and the sliding block is fixedly connected with the unlocking rod.

Through adopting above-mentioned technical scheme, the groove that slides uses with the cooperation of sliding block, can make pressure disk and unblock pole synchronous revolution on the one hand, and on the other hand can make unblock pole take place relative slip along its axis direction and pressure disk to realize the grafting and the mutual separation of first plug block and first inserting groove.

The invention is further provided that one end of the unlocking rod, which is far away from the first plug-in block, is hinged with a force application handle for rotating the unlocking rod.

Through adopting above-mentioned technical scheme, after the cover shell is screwed tightly on the lock sleeve, can overturn application of force handle to the horizontality to rotate the unblock pole through application of force handle, thereby practice thrift and rotate the required power of unblock pole, open the open and close valve for the fire fighter and facilitate.

In conclusion, the invention has the following beneficial effects:

1. the locking assembly and the unlocking assembly are matched and matched very practically, so that residents in a community can not rotate the lock cylinder without the help of the unlocking assembly, open the locking assembly and communicate with the water supply pipeline, and can not take water from the fire hydrant even if the fire hydrant is opened, thereby avoiding the waste of fire-fighting water caused by the private opening of the fire hydrant to take water;

2. the arrangement of the pressure spring can eject the lock cylinder out of the lock sleeve when the locking assembly is not connected with the unlocking assembly, so that the rotating shaft is lifted by a distance, the second insertion block is drawn out of the second insertion groove, at the moment, even if the lock cylinder is rotated, the valve core of the opening and closing valve cannot be driven by the rotating shaft to rotate, the opening and closing valve cannot be opened, the lock cylinder is pressed into the lock sleeve, the second insertion block is inserted into the second insertion groove, at the moment, no proper force application point exists on the lock cylinder, the lock cylinder drives the rotating shaft to rotate, and the difficulty of stealing fire water is further increased;

3. the carousel uses with the ball cooperation, can realize on the one hand that the cover shell is connected with the rotation of pressure disk, and another reverse side is connected because ball and carousel rotate for the carousel is rolling friction when the cover shell internal rotation, and the friction between ball and the cover shell, thereby makes the rotation between pressure disk and the carousel more smooth, thereby when the conflagration takes place, community's fire fighter can open the open and close valve fast through the unblock subassembly, thereby strives for the time of conflagration rescue.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a cross-sectional view of the present invention;

fig. 3 is a partial sectional view intended to show the glide assembly.

Reference numerals: 1. a ground surface; 11. a containing groove; 12. a shielding plate; 2. a water supply pipeline; 3. an opening and closing valve; 31. a second insertion groove; 4. a rotating shaft; 41. a second insertion block; 5. a locking assembly; 51. a lock sleeve; 511. a pressure spring; 52. a lock cylinder; 521. a first insertion groove; 6. an unlocking assembly; 61. an unlocking lever; 611. a first plug-in block; 612. a force application handle; 62. a platen; 63. a housing; 7. a slipping component; 71. a sliding groove; 72. a sliding block; 8. a rotating assembly; 81. a turntable; 82. a ball bearing; 9. a fire hydrant is provided.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

The utility model provides a water-saving fire control water supply system, refer to fig. 1 and 2, include the water supply pipe 2 that is linked together with the fire hydrant 9 that sets up on ground 1, water supply pipe 2 buries underground 1, the part that water supply pipe 2 is located the underground is connected with opening and closing valve 3, open and closing valve 3 has seted up on the ground 1 of top has storage tank 11, be provided with locking subassembly 5 and unblock subassembly 6 on the storage tank 11, it is provided with pivot 4 to force between subassembly and the switching hair, and locking subassembly 5 is connected through the pivot 4 of vertical setting with the switching hair, storage tank 11 upper cover is equipped with shielding plate 12, shielding plate 12 flushes with ground 1, and shielding plate 12 is articulated with ground 1.

When a fire disaster occurs, fire fighting staff in the community can open the locking assembly 5 through the unlocking assembly 6 so as to rotate the rotating shaft 4, open the opening and closing valve 3 through the rotating shaft 4 so as to communicate the water supply pipeline 2 with the fire hydrant 9, and supply water into the fire hydrant 9; when no fire occurs, firefighters in the community can separate the unlocking assembly 6 from the locking assembly 5 and take away the unlocking assembly 6, and at the moment, residents in the community cannot open the locking assembly 5 and communicate with the water supply pipeline 2 without the aid of the unlocking assembly 6, and even if the fire hydrant 9 is opened, water cannot be taken from the fire hydrant 9, so that waste of fire-fighting water caused by the fact that the fire hydrant 9 is opened to take water privately is avoided; the shielding plate 12 is arranged to cover the accommodating groove 11 when no fire occurs, so that the road surface is kept flat.

Referring to fig. 2, the rotating shaft 4 is a vertically arranged columnar structure, a through hole matched with the rotating shaft 4 is formed in the bottom surface of the accommodating groove 11, the through hole in the bottom surface of the accommodating groove 11 is communicated with the space where the opening and closing valve 3 is located, and the rotating shaft 4 is arranged in the through hole in the bottom surface of the accommodating groove 11; the opening and closing valve 3 is a ball valve, a second insertion block 41 is fixedly connected to the bottom end of the rotating shaft 4, the second insertion block is cubic, a second insertion groove 31 matched with the second insertion block 41 is formed in a valve core of the opening and closing valve 3, and the rotating shaft 4 and the valve core of the opening and closing valve 3 are in insertion fit through the second insertion block 41 and the second insertion groove 31.

The rotating shaft 4 is used in cooperation with the through hole at the bottom of the containing groove 11, on one hand, the rotating shaft 4 can slide up and down along the axis direction thereof, and is in insertion fit with the on-off valve 3 through the second insertion block 41 and the second insertion groove 31, on the other hand, after the second insertion block 41 is inserted into the second insertion groove 31, the rotating shaft 4 rotates at the through hole at the bottom of the containing groove 11 to drive the valve core of the on-off valve 3 to rotate, and accordingly the on-off valve 3 is opened or closed.

Referring to fig. 2, the locking assembly 5 includes a lock sleeve 51 and a lock cylinder 52, the lock sleeve 51 is a cylindrical structure, the lock sleeve 51 is sleeved on one end of the rotating shaft 4 located in the accommodating groove 11, an axis of the lock sleeve 51 coincides with an axis of the lock cylinder 52, the lock cylinder 52 is a plate-shaped structure with a circular cross section, an axis of the lock cylinder 52 coincides with an axis of the rotating shaft 4, the lock cylinder 52 is fixedly connected with the rotating shaft 4, and a diameter of the lock cylinder 52 is equal to an inner diameter of the lock sleeve 51; a pressure spring 511 is arranged between the lock cylinder 52 and the lock sleeve 51, the pressure spring 511 is positioned in the lock sleeve 51 and sleeved on the rotating shaft 4, the axis of the pressure spring 511 coincides with the axis of the lock cylinder 52, the top end of the pressure spring 511 abuts against the lock cylinder 52, the bottom end of the pressure spring 511 is fixedly connected with the lock sleeve 51, the top surface of the lock cylinder 52 exceeds the top surface of the lock sleeve 51 under the elastic action of the pressure spring 511, and the distance between the top surface of the lock cylinder 52 and the top surface of the lock sleeve 51 is equal to the depth of the second inserting groove 31.

When no fire occurs, the lock sleeve 51 is fixedly connected to the bottom surface of the containing groove 11, the lock cylinder 52 is fixedly connected with the rotating shaft 4, and the disc-shaped lock cylinder 52 is not provided with a force application part which can be used for rotating the lock cylinder 52 so as to drive the rotating shaft 4 to rotate, so that the difficulty of stealing fire-fighting water is increased, and the waste of the fire-fighting water caused by stealing is reduced; the arrangement of the pressure spring 511 can eject the lock cylinder 52 out of the lock sleeve 51 when the locking assembly 5 is not connected with the unlocking assembly 6, so as to lift the rotating shaft 4 by a distance, and draw the second insertion block 41 out of the second insertion groove 31, at this time, even if the lock cylinder 52 is rotated, the valve core of the opening and closing valve 3 cannot be driven by the rotating shaft 4 to rotate, so that the opening and closing valve 3 cannot be opened, the lock cylinder 52 is pressed into the lock sleeve 51, the second insertion block 41 is inserted into the second insertion groove 31, at this time, no proper force application point exists on the lock cylinder 52, so that the lock cylinder 52 drives the rotating shaft 4 to rotate, and the difficulty of stealing fire-fighting water is further increased.

Referring to fig. 2, the unlocking assembly 6 includes an unlocking rod 61, a pressure plate 62 and a sleeve 63, the unlocking rod 61 is a vertically-arranged rod-shaped structure, an axis of the unlocking rod 61 coincides with an axis of the lock cylinder 52, a first insertion block 611 is fixedly connected to a bottom end of the unlocking rod 61, the first insertion block 611 is also in a cube shape, a first insertion groove 521 matched with the first insertion block 611 is formed in the lock cylinder 52, the lock cylinder 52 and the unlocking rod 61 are in insertion fit through the first insertion block 611 and the first insertion groove 521, a rod-shaped force application handle 612 is hinged to a top end of the unlocking rod 61, two force application handles 612 are provided, and when the two force application handles 612 rotate to a horizontal state, axes of the two force application handles 612 coincide; the pressure plate 62 is of an annular plate-shaped structure, the pressure plate 62 is sleeved on the rotating shaft 4 and is connected with the rotating shaft 4 in a sliding manner, the axis of the pressure plate 62 is overlapped with the axis of the rotating shaft 4, the bottom surface of the pressure plate 62 is abutted against the top surface of the lock cylinder 52, and the vertical projection of the pressure plate 62 is overlapped with the vertical projection of the lock cylinder 52; the sleeve 63 is of a cylindrical structure, the sleeve 63 is sleeved on the lock sleeve 51 and is in threaded connection with the lock sleeve 51, the top surface of the sleeve 63 is flush with the pressure plate 62, and the sleeve 63 is rotatably connected with the pressure plate 62.

When a fire occurs, the first insertion block 611 of the unlocking rod 61 can be inserted into the first insertion groove 521 of the lock cylinder 52, then the sleeve 63 is rotated to enable the sleeve 63 to be in threaded connection with the lock sleeve 51, during the process of screwing the sleeve 63, the pressure plate 62 presses the lock cylinder 52 downwards to enable the lock cylinder 52 to push the rotating shaft 4 to move downwards, the second insertion block 41 is inserted into the second insertion groove 31, after the sleeve 63 is screwed, the force application handle 612 is turned to be in a horizontal state, then the unlocking rod 61 is rotated through the force application handle 612, the unlocking rod 61 drives the lock cylinder 52 to rotate so as to drive the rotating shaft 4 to rotate, the rotating shaft 4 drives the valve core of the opening and closing valve 3 to rotate, and therefore the opening and closing valve 3 is opened, and the water supply pipeline 2 is communicated with the fire.

Referring to fig. 3, a sliding assembly 7 is arranged between the pressure plate 62 and the rotating shaft 4, the sliding assembly 7 includes a sliding groove 71 and a sliding block 72, the sliding groove 71 is formed on the inner circumferential surface of the pressure plate 62, the sliding grooves 71 are formed in a plurality, the sliding grooves 71 are arranged on the inner circumferential surface of the pressure plate 62 in an equidistant manner, and the length direction of the sliding grooves 71 is parallel to the axial direction of the pressure plate 62; the sliding blocks 72 are also provided with a plurality of sliding blocks 72, the sliding blocks 72 are respectively matched with the sliding grooves 71 for use, the sliding blocks 72 are arranged at equal intervals along the circumferential direction of the unlocking rod 61, and the sliding blocks 72 are fixedly connected with the unlocking rod 61.

The sliding groove 71 is used in cooperation with the sliding block 72, so that the pressure plate 62 and the unlocking rod 61 can rotate synchronously on one hand, and the unlocking rod 61 and the pressure plate 62 can slide relatively along the axial direction of the unlocking rod 61 on the other hand, so that the first insertion block 611 and the first insertion groove 521 can be inserted and separated from each other.

Referring to fig. 3, be provided with runner assembly 8 between pressure plate 62 and the cover 63, runner assembly 8 includes carousel 81 and ball 82, carousel 81 is the ring form, carousel 81 cover establish on pressure plate 62 and with pressure plate 62 fixed connection, set up on the inboard periphery at cover 63 top with the carousel 81 cooperation rotation groove that uses, the groove width in rotation groove is greater than the thickness of carousel 81, ball 82 is provided with a plurality ofly, a plurality of ball 82 arrange along the circumference equidistance of carousel 81, ball 82 inlays to be established on carousel 81, and run through carousel 81, ball 82 rotates with carousel 81 to be connected, the top and the bottom of ball 82 are located outside carousel 81, and with the top surface and the bottom surface butt in rotation groove.

Carousel 81 uses with the cooperation of ball 82, can realize on the one hand that the rotation of cover box 63 and pressure disk 62 is connected, and another reverse is connected because ball 82 rotates with carousel 81 for carousel 81 is when cover box 63 internal rotation, and the friction between ball 82 and the cover box 63 is rolling friction, thereby makes the rotation between pressure disk 62 and the carousel 81 more smooth, thereby when the conflagration takes place, community's fire fighter can open valve 3 fast through unblock subassembly 6, thereby strive for the time of fire rescue.

The using process of the invention is as follows:

The present embodiment is only for explaining the present invention, and it is not limited to the present invention, and those skilled in the art can make modifications of the present embodiment without inventive contribution as needed after reading the present specification, but all of them are protected by patent law within the scope of the claims of the present invention.

Claims

1. The utility model provides a water-saving fire control water supply system, includes water supply pipe (2) with fire hydrant (9) fixed connection, and water supply pipe (2) are buried underground, its characterized in that: the water supply pipeline (2) is connected with an opening and closing valve (3) used for controlling water flow to enter a fire hydrant (9) on the underground part, a containing groove (11) is formed in the ground (1) above the opening and closing valve (3), a shielding plate (12) is arranged on the upper cover of the containing groove (11), a rotating shaft (4) used for controlling the opening and closing of the opening and closing valve (3) is arranged in the containing groove (11), one end, close to the opening and closing valve (3), of the rotating shaft (4) is in plug-in fit with the opening and closing valve (3), one end, far away from the opening and closing valve (3), of the rotating shaft (4) is provided with a locking assembly, the locking assembly comprises a lock sleeve (51) and a lock cylinder (52), the lock sleeve (51) is sleeved on the rotating shaft (4), the lock sleeve (51) is fixedly connected with the bottom surface of the containing groove (11), the lock cylinder (52), the lock core (52) is connected with an unlocking component (6) which is used for driving the rotating shaft (4) to rotate through the lock core (52).

2. A water-saving fire water supply system according to claim 1, wherein; unblock subassembly (6) are including unblock pole (61), pressure disk (62) and cover shell (63), and unblock pole (61) and lock core (52) cooperation are used, and the one end fixed connection that clamp plate and unblock pole (61) are close to lock core (52), and cover shell (63) cover is established on pressure disk (62) to rotate with pressure disk (62) and be connected, cover shell (63) and lock sleeve (51) cooperation are used and threaded connection.

3. A water-saving fire water supply system according to claim 2, wherein: one end of the unlocking rod (61) close to the lock cylinder (52) is fixedly connected with a first insertion block (611), and one end of the lock cylinder (52) close to the lock rod is provided with a first insertion groove (521) matched with the insertion block for use.

4. A water-saving fire water supply system according to claim 3, wherein: the opening and closing valve (3) is a ball valve, one end of the rotating shaft (4) close to the opening and closing valve (3) is fixedly connected with a second insertion block (41), and a valve core of the opening and closing valve (3) is provided with a second insertion groove (31) which is in insertion fit with the second insertion block (41).

5. A water-saving fire water supply system according to claim 4, wherein: a pressure spring (511) is arranged between the lock cylinder (52) and the lock sleeve (51), the pressure spring (511) is arranged in the lock sleeve (51), and two free ends of the pressure spring (511) are respectively abutted against the lock cylinder (52) and the lock sleeve (51).

6. A water-saving fire water supply system according to claim 5, wherein: be provided with rotating assembly (8) between pressure disk (62) and the sleeve, rotating assembly (8) are including carousel (81) and ball (82), carousel (81) cover establish on pressure disk (62) and with the outside periphery fixed connection of pressure disk (62), set up on the inboard periphery of cover shell (63) with carousel (81) cooperation use the rotation groove, the width in rotation groove is greater than the thickness of carousel (81), ball (82) are provided with a plurality of, carousel (81) are run through along the direction of parallel and carousel (81) axis in a plurality of ball (82), and slide with carousel (81) and be connected, ball (82) and the lateral wall butt in rotation groove.

7. A water-saving fire water supply system according to claim 6, wherein: be provided with between release lever (61) and pressure disk (62) subassembly (7) that slides, subassembly (7) that slides including sliding groove (71) and sliding block (72), sliding groove (71) are seted up on pressure disk (62) are close to the inner wall of release lever (61), sliding block (72) set up in sliding groove (71), and sliding block (72) and release lever (61) fixed connection.

8. A water-saving fire water supply system according to claim 7, wherein: one end of the unlocking rod (61) far away from the first plug-in block (611) is hinged with a force application handle (612) used for rotating the unlocking rod (61).