CN214008162U - Integrated regional control valve group - Google Patents

Abstract

The utility model discloses an integrated form area control valves. An integrated regional control valve group comprises a control butterfly valve, a main check valve, a water flow switch, a water supply side pressure gauge, a system side pressure gauge, a drainage test valve, a pressure release valve and a thread sight glass; the main check valve comprises a valve body, a valve cover, a valve clack, a connecting device of the valve clack and the inner surface of the valve cover, a limiting anti-touch device of the valve clack and an inner cavity of the valve body, a valve clack resetting device and a water flow switch push rod triggering device. The functions of non-return, pressure detection, pressure relief, water drainage and test are conveniently realized; the length, the weight and the occupied space of the integrated area control valve group structure are reduced; the integrated regional control valve bank is convenient, time-saving and labor-saving to install, the preparation and installation cost is reduced, and the false alarm phenomenon of the system is prevented.

Description

Integrated regional control valve group

Technical Field

The utility model belongs to a regional control valve especially belongs to an integrated form regional control valves.

Background

The existing integrated area control valve set is generally composed of a system control butterfly valve, a check valve, a blade type water flow indicator 15, a drain valve, a test valve, a pressure gauge, a connecting pipeline and the like (as shown in the attached figure 8 in the specification). The integrated area control valve bank is used in a spraying system of a multi-floor building, mainly used for controlling water supply of a certain area, and has the functions of non-return, pressure detection and pressure relief and drainage test. However, the existing integrated area control valve group (as the attached figure 8 in the specification) occupies a large installation space, a connecting pipeline needs to be provided with a hole for installing the blade type water flow indicator, the installation is time-consuming and labor-consuming, the manufacturing cost is high, meanwhile, the water flow indicator is triggered to generate an electric signal sometimes due to turbulent flow of water or air surge inside the system pipeline, and further the false alarm phenomenon of the system is caused. How to conveniently realize the functions of non-return, pressure detection, pressure relief, water drainage and test of the integrated area control valve bank; the length, the weight and the occupied space of the integrated area control valve set are reduced, and the integrated area control valve set is simple, compact and reliable in structure; how to conveniently, time-saving and labor-saving realize the installation of the integrated area control valve group and reduce the preparation and installation cost, and how to prevent the occurrence of the false alarm phenomenon of the system is the problem to be solved.

SUMMERY OF THE UTILITY MODEL

The utility model discloses the technical problem that will solve is: an integrated zone control valve block is provided. The integrated regional control valve bank can conveniently realize the functions of non-return, pressure detection, pressure relief, water drainage and test; the length, the weight and the occupied space of the integrated area control valve set structure can be reduced, and the integrated area control valve set is simple, compact and reliable in structure; the integrated regional control valve bank can be conveniently, time-saving and labor-saving installed, the preparation and installation cost is reduced, and the false alarm phenomenon of the system can be prevented.

The utility model provides a technical scheme of above-mentioned technical problem is: an integrated regional control valve group is characterized in that: the water-saving valve comprises a control butterfly valve, a main check valve, a water flow switch, a water supply side pressure meter, a system side pressure meter, a drainage test valve and a pressure release valve, wherein the control butterfly valve is a turbine head signal butterfly valve, the main check valve is provided with a valve cover, the drainage test valve is a three-way ball valve with testing and drainage functions, the water outlet end of the turbine head signal butterfly valve is fixedly connected with the upper part and the lower part of the water inlet end of the main check valve by a groove pipe clamp, the left side and the right side of the main check valve body which are fixedly connected with the upper part and the lower part of the water outlet end of the turbine head signal butterfly valve are symmetrically and respectively provided with a thread port, a thread plug is arranged on the left thread port arranged on the main check valve body, the right thread port arranged on the main check valve body is fixedly connected with the water inlet end of the three-way ball valve with testing and drainage functions by a connecting piece, and a thread viewing mirror is arranged on the water outlet end of the three-way ball valve with testing and drainage functions by an internal connecting piece, the other end of the screw thread sight glass is connected with a tee pipe fitting by using an internal connecting wire; the three-way ball valve with the testing and water discharging functions is provided with a third end provided with a pressure release valve, a discharge port of the pressure release valve is provided with a transparent hose by using a connecting piece, and the other end of the transparent hose is hermetically connected with a transverse port of a three-way pipe; the water supply side pressure gauge is communicated and hermetically connected with the wall of the water inlet end of the main check valve body through a water supply side pressure gauge valve and a connecting piece, and the system side pressure gauge is communicated and hermetically connected with the wall of the upper part of the main check valve body through a system side pressure gauge valve and a connecting piece; the water flow switch is fixedly arranged on the valve cover of the main check valve by using a screw, and is provided with a water flow switch push rod and a microswitch;

the main check valve comprises a valve body, a valve seat, a valve cover, a valve clack sealing gasket fixedly arranged on the lower bottom surface of the valve clack by using a pressing plate and a bolt, a connecting device of the valve clack and the inner surface of the valve cover, a limiting anti-touch device of the valve clack and an inner cavity of the valve body, and a valve clack resetting device; the connecting device of the valve clack and the inner surface of the valve cover comprises a strip-shaped plate, two vertical plates and a rotating shaft, one end of the strip-shaped plate is fixedly connected with the valve clack, the front vertical surface and the rear vertical surface of the strip-shaped plate fixedly connected with the valve clack are connected with the arc surface of the circular vertical surface of the valve clack, the strip-shaped plate with the front vertical surface and the rear vertical surface connected with the arc surface of the circular vertical surface of the valve clack is integrally formed with the valve clack, the two vertical plates are respectively arranged on the front side and the rear side of the top surface of the strip-shaped plate integrally formed with the valve clack, the two valve clack connecting plates are sequentially arranged on the front side and the rear side of the inner surface of the valve cover corresponding to the position of the strip-shaped plate integrally formed with the valve clack, the two vertical plates respectively arranged on the front side and the rear side of the top surface of the strip-shaped plate integrally formed with the valve clack are used for the valve clack, the valve cover is rotatably connected with the valve cover in a rotating manner, the two vertical plates arranged on the front side and the inner surface of the rotating shaft, the valve cover rotatably connected with the valve cover, The two valve clack connecting plates which are arranged at the back are respectively positioned at the outer sides of the two vertical plates which are respectively arranged at the front side and the back side of the top surface of the strip-shaped plate which is formed integrally with the valve clack; the limiting anti-touch devices of the valve clack and the inner cavity of the valve body are a valve clack limiting anti-collision circular boss A and a valve clack limiting anti-collision circular boss B, wherein the valve clack limiting anti-collision circular boss A and the valve clack limiting anti-collision circular boss B are correspondingly and respectively arranged on one side of the top surface of the valve clack, which is close to an integrally formed strip plate of the valve clack, and the inner cavity of the valve body is arranged on the inner surface of the upper side of the valve cover and corresponds to the valve clack limiting anti-collision circular boss A; the valve clack reset device is a reset torsion spring, the reset torsion spring is sleeved on a rotating shaft part between two valve clack connecting plates which are arranged in front of and behind the inner surface of the valve cover, and the reset torsion spring sleeved on the rotating shaft part between the two valve clack connecting plates which are arranged in front of and behind the inner surface of the valve cover is respectively in annular compression connection with a valve clack limiting anti-collision circular boss A arranged on the upper top surface of the valve clack by using 2 torsion spring supporting legs thereof; the water flow switch push rod trigger device comprises a water flow switch push rod trigger arm, the water flow switch push rod trigger arm is composed of a vertical arm part and a bent arm part, the vertical arm part and the bent arm part of the water flow switch push rod trigger arm are integrally formed, the water flow switch push rod trigger arm is fixedly connected with the vertical arm part end of the water flow switch push rod trigger arm and the vertical face of the other end of the strip-shaped plate, the vertical face of the water flow switch push rod trigger arm is integrally formed with the valve clack, and the bent arm part of the water flow switch push rod trigger arm, which is fixedly connected with the vertical face of the other end of the strip-shaped plate, is positioned between two vertical plates on the front side and the rear side of the top face of the strip-shaped plate; when the valve clack is pushed by external force to gradually open towards one side of the B valve clack limiting anti-collision circular boss on the inner surface of the inner cavity of the valve body, the outer vertical face of the bent arm part of the water flow switch push rod trigger arm fixedly connected with the vertical face of the other end of the strip-shaped plate integrally formed with the valve clack can gradually convert the pressing trigger position of the water flow switch push rod and always realize the pressing trigger of the water flow switch push rod when the valve clack is gradually opened towards one side of the B valve clack limiting anti-collision circular boss on the inner surface of the inner cavity of the valve body, and meanwhile, the other end of the water flow switch push rod triggers the micro switch of the water flow switch to transmit an electric signal to a control room and start a fire pump to supply water and extinguish fire.

The utility model has the advantages that: because the utility model is provided with the control butterfly valve, the main check valve, the water flow switch and the water supply side pressure gauge, the system side pressure gauge, the drainage test valve and the relief valve, wherein the control butterfly valve is a turbine head signal butterfly valve, the drainage test valve is a three-way ball valve with testing and drainage functions, the water outlet end of the turbine head signal butterfly valve is fixedly connected with the water inlet end of a main check valve up and down by using a groove pipe clamp, the left side and the right side of the valve body of the main check valve are symmetrically provided with threaded ports respectively, a left threaded port arranged on the valve body of the main check valve is provided with a plug, a right threaded port arranged on the valve body of the main check valve is fixedly connected with the water inlet end of the three-way ball valve with testing and drainage functions by using a connecting piece, the water outlet end of the three-way ball valve with testing and drainage functions is connected with a thread sight glass by using an internal connecting wire, and the other end of the thread sight glass is connected with a three-way pipe fitting by using an internal connecting wire; the three-way ball valve with the testing and water discharging functions is provided with a third end provided with a pressure release valve, a discharge port of the pressure release valve is provided with a transparent hose by using a connecting piece, and the other end of the transparent hose is hermetically connected with a transverse port of a three-way pipe; the water supply side pressure gauge is communicated and hermetically connected with the wall of the water inlet end of the main check valve body by using a water supply side pressure gauge valve and a connecting piece, and the system side pressure gauge is communicated and hermetically connected with the wall of the upper part of the main check valve body by using a system side pressure gauge valve and a connecting piece; the water flow switch is fixedly arranged on the valve cover of the main check valve by using a screw, and is provided with a water flow switch push rod and a microswitch; the main check valve comprises a valve body, a valve seat and a valve clack, wherein a valve clack sealing gasket is fixedly installed on the lower bottom surface of the valve clack by a pressing plate and a bolt, the main check valve further comprises a connecting device of the valve clack and the inner surface of a valve cover, a limiting anti-touch device of the valve clack and an inner cavity of the valve body, a valve clack reset device and a water flow switch push rod trigger device, and the water flow switch push rod trigger device comprises a water flow switch push rod trigger arm which consists of a vertical arm part and a bending arm part. The integrated area control valve group of the utility model conveniently realizes the functions of non-return, pressure detection, pressure relief, water drainage and test; the length, the weight and the occupied space of the integrated area control valve set are reduced, and the integrated area control valve set is simple, compact and reliable in structure; the integrated regional control valve bank is convenient, time-saving and labor-saving to install, the preparation and installation cost is reduced, and the false alarm phenomenon of the system is prevented.

Drawings

The present invention will be further explained with reference to the drawings and examples;

fig. 1 is a schematic structural diagram of the present invention;

fig. 2 is a left side view of the present invention;

FIG. 3 is a schematic structural view illustrating an initial servo state of the main check valve according to the present invention;

FIG. 4 is a schematic structural view of the water flow switch push rod in the triggering process when the valve flap of the main check valve of the present invention is opened by 20 °;

FIG. 5 is a schematic structural view of the water flow switch push rod in the triggering process when the valve flap of the main check valve of the present invention is fully opened;

FIG. 6 is a schematic structural view of the valve flap of the main check valve and the trigger arm of the water flow switch push rod of the present invention;

FIG. 7 is a perspective view of the main check valve of the present invention, wherein the valve flap and the valve cover are rotatably connected by a rotating shaft, the torsion spring is reset and the installation thereof, and the water flow switch push rod trigger arm and the installation thereof

FIG. 8 is a schematic diagram of a prior art integrated zone control valve assembly;

in the drawings: 1. the anti-collision device comprises a turbine head signal butterfly valve, 2 a three-way ball valve with a testing and draining function, 3 a main check valve, 4 a water flow switch, 5 a water supply side pressure gauge, 6 a system side pressure gauge, 7 a pressure relief valve, 8 a groove pipe clamp, 9 a thread sight glass, 10 a transparent hose, 11 a water supply side pressure gauge valve, 12 a system side pressure gauge valve, 41 a water flow switch push rod, 42 a micro switch, 31 a valve body, 32 a valve seat, 33 a valve cover, 34 a valve flap, 35 a valve flap sealing gasket, 36 a strip-shaped plate, 37 an anti-collision rotating shaft, 38 a valve flap connecting plate, 341.A anti-collision circular boss, 342.B valve flap limiting circular boss, 13 a reset torsion spring, 14 a water flow switch push rod trigger arm, 141, a vertical arm part, 142 a bent arm part and 15 a paddle type water flow indicator.

Detailed Description

The present invention will be described in further detail with reference to the following examples.

Example 1

As shown in fig. 1, 2, 3, 4, 5, 6 and 7, an integrated area control valve group is characterized in that: including control butterfly valve, main check valve 3, water flow switch 4, supply water side manometer 5, system side manometer 6, drainage test valve, relief valve 7, the control butterfly valve is turbine head signal butterfly valve 1, main check valve 3 has valve gap 33, the tee bend ball valve 2 of drainage test valve for having test and drainage function, this tee bend ball valve 2 that has test and drainage function is patent application number 2020225725148, patent name: a three-way ball valve with testing and draining functions; the water outlet end of the turbine head signal butterfly valve 1 is fixedly connected with the upper part and the lower part of the water inlet end of the main check valve 3 by using the groove pipe clamp 8, the left side and the right side of the main check valve 3 which is fixedly connected with the upper part and the lower part of the water outlet end of the turbine head signal butterfly valve 1 by using the groove pipe clamp 8 are symmetrically provided with a thread port respectively (an observer faces the utility model, the left side of the observer is the left side of the main check valve body, the right side of the observer is the right side of the main check valve body, one side close to the main check valve body is the front side of the main check valve body, one side far away from the main check valve body is the rear side of the main check valve body), a thread plug is arranged on the left thread port arranged on the main check valve 3, the right thread port arranged on the main check valve body is fixedly connected with the water inlet end of the three-way ball valve 2 with the testing and the water draining functions by using an internal connecting thread, a viewing mirror 9 is connected with the water outlet end of the three-way ball valve 2 with the testing and the draining functions, the other end of the thread sight glass 9 is connected with a tee pipe fitting by using an internal connecting wire; the three-way ball valve 2 with the testing and draining functions is provided with a third end provided with a pressure relief valve 7, the three-way ball valve 2 with the testing and draining functions has three opening degrees of testing, draining and closing, and the three-way ball valve 2 with the testing and draining functions is provided with the pressure relief valve 7 at the third end to realize the functions of system testing, residual water draining and pressure relief; the screw thread sight glass 9 is positioned at the drainage side of the three-way ball valve with the testing and drainage functions, and whether water flows out when drainage is tested by the system can be conveniently observed through the screw thread sight glass 9; the three processes of testing, draining and closing the tee ball with the testing and draining functions of the utility model are referred to the Chinese patent document with the patent application number of 2020225725148; the discharge port of the pressure release valve 7 is provided with a transparent hose 10 by using a connecting piece, and the other end of the transparent hose 10 is connected with the transverse port of the three-way pipe fitting in a sealing way; the water supply side pressure gauge 5 is communicated and hermetically connected with the wall of the water inlet end of the valve body of the main check valve 3 by using a water supply side pressure gauge valve 11 and a connecting piece, and the system side pressure gauge 6 is communicated and hermetically connected with the wall of the upper part of the valve body of the main check valve 3 by using a system side pressure gauge valve 12 and a connecting piece; the installation of the water supply side pressure gauge 5 and the system side pressure gauge 6 is convenient for displaying the pressure on both sides of the valve clack 34 of the main check valve 3; the water flow switch 4 is fixedly arranged on the main check valve cover 33 by using screws, and the water flow switch fixedly arranged on the main check valve cover 33 by using screws is provided with a water flow switch push rod 41 and a microswitch 42;

the main check valve comprises a valve body 31, a valve seat 32, a valve cover 33, a valve clack 34, a valve clack sealing gasket 35 fixedly installed on the lower bottom surface of the valve clack 34 by using a pressing plate and bolts, a connecting device of the valve clack and the inner surface of the valve cover, a limiting anti-touch device of the valve clack and an inner cavity of the valve body and a valve clack resetting device; the connecting device of the valve clack and the inner surface of the valve cover comprises a strip-shaped plate 36, two vertical plates and a rotating shaft 37, one end of the strip-shaped plate 36 is fixedly connected with the valve clack 34, the front vertical surface and the rear vertical surface of one end of the strip-shaped plate 36 fixedly connected with the valve clack 34 are connected with the arc surface of the circular vertical surface of the valve clack 34, the strip-shaped plate 36 with the front vertical surface and the rear vertical surface connected with the arc surface of the circular vertical surface of the valve clack 34 is integrally formed with the valve clack 34, the two vertical plates are respectively arranged on the front side and the rear side of the top surface of the strip-shaped plate 36 which is integrally formed with the valve clack 34, two valve clack 38 are sequentially arranged on the front side and the rear side of the inner surface of the valve cover 33 corresponding to the position of the strip-shaped plate 36 which is integrally formed with the valve clack, the two vertical plates, the rotating shaft 37 and the connecting plates 38 arranged on the front side and the rear side of the inner surface of the valve cover 33 are rotatably hinged with the valve clack 33, two valve clack connecting plates 38 which are arranged in front of and behind the inner surface of the valve cover and are rotationally connected with a rotating shaft 37 are respectively positioned on the outer sides of two vertical plates which are respectively arranged in front of and behind the top surface of a strip-shaped plate 36 which is integrally formed with the valve clack 34; the limiting anti-touch devices of the valve clack and the inner cavity of the valve body are a valve clack limiting anti-collision circular boss 341A and a valve clack limiting anti-collision circular boss 342B, which are correspondingly and respectively arranged on the top surface of the valve clack 34 close to one side of the integrally formed strip-shaped plate 36 of the valve clack, and the inner surface of the inner cavity of the valve body is positioned on the inner side of the upper side of the valve cover and corresponds to the valve clack limiting anti-collision circular boss 341A; the valve clack resetting device is a resetting torsion spring 13, the resetting torsion spring 13 is sleeved on the part of the rotating shaft 37 between the two valve clack connecting plates 38 arranged in front of and behind the inner surface of the valve cover 33, and the resetting torsion spring 13 sleeved on the part of the rotating shaft 37 between the two valve clack connecting plates 38 arranged in front of and behind the inner surface of the valve cover 33 is respectively in annular compression connection with a valve clack limiting anti-collision circular boss 341 arranged on the top surface of the valve clack 34 by using 2 torsion spring supporting legs thereof; the water flow switch push rod trigger device comprises a water flow switch push rod trigger arm 14, wherein the water flow switch push rod trigger arm 14 is composed of a vertical arm part 141 and a bent arm part 142, the vertical arm part 141 and the bent arm part 142 of the water flow switch push rod trigger arm 14 are integrally formed, the water flow switch push rod trigger arm 14 is fixedly connected with the vertical surface of the other end of a strip-shaped plate 36 integrally formed with a valve clack by using the end part of the vertical arm part 141 of the water flow switch push rod trigger arm 14, and the bent arm part 142 of the water flow switch push rod trigger arm 14 fixedly connected with the vertical surface of the other end of the strip-shaped plate 36 is positioned between two vertical plates on the front side and the rear side of the top surface of the strip-shaped plate; when the valve clack 34 is pushed by external force to gradually open towards one side of the B valve clack limiting anti-collision circular boss 342 on the inner surface of the inner cavity of the valve body 31, the outer vertical surface of the bent arm part 142 of the water flow switch push rod trigger arm 14 fixedly connected with the vertical surface of the other end of the strip-shaped plate integrally formed with the valve clack 34 can gradually convert the pressing trigger position of the water flow switch push rod 41 and realize the pressing trigger of the water flow switch push rod 41 all the time when the valve clack 34 is gradually opened towards one side of the B valve clack limiting anti-collision circular boss 342 on the inner surface of the inner cavity of the valve body 31, meanwhile, the other end of the water flow switch push rod 41 triggers the micro switch 42 of the water flow switch 4, an electric signal is transmitted to a control room, and a fire pump is started to supply water for fire extinguishing; after the fire extinguishing is finished, the turbine head signal butterfly valve 1 is closed, the tee ball handle with the testing and water discharging functions is rotated to a water discharging position, and the residual water of the system is quickly discharged, so that the utility model is restored to the initial servo state; the utility model discloses during the initial state of servoing, turbine head signal butterfly valve is in the open position, and the tee bend ball that has test and drainage function is located closed position, and main check valve both sides pressure equals this moment, and the valve clack is closed.

From the above description, those skilled in the art can make various changes and modifications without departing from the technical spirit of the present invention, and the present invention is within the protection scope of the present invention. The present invention is not to be considered as the best thing, and belongs to the common general knowledge of the technicians in the field.

Claims (1)

1. An integrated regional control valve group is characterized in that: the water-saving valve comprises a control butterfly valve, a main check valve, a water flow switch, a water supply side pressure meter, a system side pressure meter, a drainage test valve and a pressure release valve, wherein the control butterfly valve is a turbine head signal butterfly valve, the main check valve is provided with a valve cover, the drainage test valve is a three-way ball valve with testing and drainage functions, the water outlet end of the turbine head signal butterfly valve is fixedly connected with the upper part and the lower part of the water inlet end of the main check valve by a groove pipe clamp, the left side and the right side of the main check valve body which are fixedly connected with the upper part and the lower part of the water outlet end of the turbine head signal butterfly valve are symmetrically and respectively provided with a thread port, a thread plug is arranged on the left thread port arranged on the main check valve body, the right thread port arranged on the main check valve body is fixedly connected with the water inlet end of the three-way ball valve with testing and drainage functions by a connecting piece, and a thread viewing mirror is arranged on the water outlet end of the three-way ball valve with testing and drainage functions by an internal connecting piece, the other end of the screw thread sight glass is connected with a tee pipe fitting by using an internal connecting wire; the three-way ball valve with the testing and water discharging functions is provided with a third end provided with a pressure release valve, a discharge port of the pressure release valve is provided with a transparent hose by using a connecting piece, and the other end of the transparent hose is hermetically connected with a transverse port of a three-way pipe; the water supply side pressure gauge is communicated and hermetically connected with the wall of the water inlet end of the main check valve body through a water supply side pressure gauge valve and a connecting piece, and the system side pressure gauge is communicated and hermetically connected with the wall of the upper part of the main check valve body through a system side pressure gauge valve and a connecting piece; the water flow switch is fixedly arranged on the valve cover of the main check valve by using a screw, and is provided with a water flow switch push rod and a microswitch;

the main check valve comprises a valve body, a valve seat, a valve cover, a valve clack sealing gasket fixedly arranged on the lower bottom surface of the valve clack by using a pressing plate and a bolt, a connecting device of the valve clack and the inner surface of the valve cover, a limiting anti-touch device of the valve clack and an inner cavity of the valve body, and a valve clack resetting device; the connecting device of the valve clack and the inner surface of the valve cover comprises a strip-shaped plate, two vertical plates and a rotating shaft, one end of the strip-shaped plate is fixedly connected with the valve clack, the front vertical surface and the rear vertical surface of the strip-shaped plate fixedly connected with the valve clack are connected with the arc surface of the circular vertical surface of the valve clack, the strip-shaped plate with the front vertical surface and the rear vertical surface connected with the arc surface of the circular vertical surface of the valve clack is integrally formed with the valve clack, the two vertical plates are respectively arranged on the front side and the rear side of the top surface of the strip-shaped plate integrally formed with the valve clack, the two valve clack connecting plates are sequentially arranged on the front side and the rear side of the inner surface of the valve cover corresponding to the position of the strip-shaped plate integrally formed with the valve clack, the two vertical plates respectively arranged on the front side and the rear side of the top surface of the strip-shaped plate integrally formed with the valve clack are used for the valve clack, the valve cover is rotatably connected with the valve cover in a rotating manner, the two vertical plates arranged on the front side and the inner surface of the rotating shaft, the valve cover rotatably connected with the valve cover, The two valve clack connecting plates which are arranged at the back are respectively positioned at the outer sides of the two vertical plates which are respectively arranged at the front side and the back side of the top surface of the strip-shaped plate which is formed integrally with the valve clack; the limiting anti-touch devices of the valve clack and the inner cavity of the valve body are a valve clack limiting anti-collision circular boss A and a valve clack limiting anti-collision circular boss B, wherein the valve clack limiting anti-collision circular boss A and the valve clack limiting anti-collision circular boss B are correspondingly and respectively arranged on one side of the top surface of the valve clack, which is close to an integrally formed strip plate of the valve clack, and the inner cavity of the valve body is arranged on the inner surface of the upper side of the valve cover and corresponds to the valve clack limiting anti-collision circular boss A; the valve clack reset device is a reset torsion spring, the reset torsion spring is sleeved on a rotating shaft part between two valve clack connecting plates which are arranged in front of and behind the inner surface of the valve cover, and the reset torsion spring sleeved on the rotating shaft part between the two valve clack connecting plates which are arranged in front of and behind the inner surface of the valve cover is respectively in annular compression connection with a valve clack limiting anti-collision circular boss A arranged on the upper top surface of the valve clack by using 2 torsion spring supporting legs thereof; the water flow switch push rod trigger device comprises a water flow switch push rod trigger arm, the water flow switch push rod trigger arm is composed of a vertical arm part and a bent arm part, the vertical arm part and the bent arm part of the water flow switch push rod trigger arm are integrally formed, the water flow switch push rod trigger arm is fixedly connected with the vertical arm part end of the water flow switch push rod trigger arm and the vertical face of the other end of the strip-shaped plate, the vertical face of the water flow switch push rod trigger arm is integrally formed with the valve clack, and the bent arm part of the water flow switch push rod trigger arm, which is fixedly connected with the vertical face of the other end of the strip-shaped plate, is positioned between two vertical plates on the front side and the rear side of the top face of the strip-shaped plate; when the valve clack is pushed by external force to gradually open towards one side of the B valve clack limiting anti-collision circular boss on the inner surface of the inner cavity of the valve body, the outer vertical face of the bent arm part of the water flow switch push rod trigger arm fixedly connected with the vertical face of the other end of the strip-shaped plate integrally formed with the valve clack can gradually convert the pressing trigger position of the water flow switch push rod and always realize the pressing trigger of the water flow switch push rod when the valve clack is gradually opened towards one side of the B valve clack limiting anti-collision circular boss on the inner surface of the inner cavity of the valve body, and meanwhile, the other end of the water flow switch push rod triggers the micro switch of the water flow switch to transmit an electric signal to a control room and start a fire pump to supply water and extinguish fire.

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