CN203280951U - Liquid extinguishing agent atomizing spray gun - Google Patents

Abstract

The utility model provides a liquid extinguishing agent atomizing spray gun. A plurality of atomizing nozzles are arranged around a spray head of the extinguishing agent spray gun, and a plurality of section contraction type pipeline jet ejectors arranged at the center. The atomizing nozzles enables a flow-through liquid to rotate, when the liquid comes out of outlets, it undergoes friction with air, and then breaks and undergoes atomizing, thus generating a spray fluid mist field. The liquid extinguishing agent flowing through the pipeline jet ejectors is sprayed from the nozzles at a higher speed to form high speed jets, which pass through the atomizing nozzles to form a spray fluid mist field. When the jets undergo friction with air, they undergo breaking and atomizing at a distant area so as to generate a spray liquid extinguishing agent mist field. The two liquid extinguishing agent mist fields form an extinguishing agent mist field similar to a banana. In the utility model, two mist fields are connected into a banana-shaped liquid extinguishing agent mist field, which has the advantages of large coverage area, strong penetrating power, easy penetrating of fire plume, and good fire extinguishing effect.

Description

A liquid fire extinguishing agent atomizing spray gun

technical field

The utility model belongs to the technical field of fire extinguishing equipment, in particular to a liquid fire extinguishing agent atomizing spray gun, which is a fire extinguishing spray gun of a mechanical fluid spraying fire extinguishing agent fire extinguishing device.

Background technique

In order to extinguish the fire safely and efficiently, the utility model proposes a fire extinguishing agent spray gun capable of spraying and producing banana-like liquid atomization. The fire extinguishing agent sprayed from the center of the spray gun spray head is fast, and the spraying distance is long when the hand-held operation is used, and the atomization effect is good. , High fire extinguishing efficiency. The fire extinguishing agent sprayed by the spray gun has a large coverage area, strong penetrating power, easy to penetrate the fire plume, and good fire extinguishing effect.

Contents of the invention

In order to solve the problems of low speed of atomized fire extinguishing agent produced by the atomized spray gun of the existing fire extinguishing device, short spray distance, low ability to pass through the fire plume, and poor fire extinguishing effect, the utility model provides a method of arranging multiple The nozzle with narrowed pipe section is surrounded by a plurality of atomizing nozzles to form a spray gun capable of producing a banana-like liquid atomized fire extinguishing agent spray head.

The technical scheme adopted by the utility model in order to achieve the above object is as follows: a liquid fire extinguishing agent atomization spray gun, including a spray head, a spray gun seat and a connecting pipe, and the spray head is composed of a spray head seat, a nozzle seat, a nozzle core and a spray head cover. The nozzle core is installed in the nozzle seat, the nozzle seat is installed in the nozzle seat, and the nozzle cover is installed on the upper part of the nozzle seat to fix the nozzle seat. The nozzle seat is a hollow frustum-shaped rigid body, and one end is an internal thread. The inner thread is connected with the liquid delivery pipeline, and the other end is an inner concave platform, and the nozzle seat is installed in the inner concave platform, and the nozzle seat is fixedly installed by connecting the outer thread and the nozzle cover; there are several holes uniformly opened in the middle of the nozzle seat. Converging injection pipe, a plurality of spray holes with internal threads are evenly arranged on the concentric circle around the shrinking injection pipe, used to install the nozzle core; the nozzle core is a cylindrical rigid body, and the top of the nozzle core is in the shape of a truncated cone. There are 3 or 4 oblique grooves on the round platform. The direction of the oblique grooves forms an angle of 40-50 degrees with the central axis and end surface of the cylinder. The sprayed liquid fire extinguishing agent passes through the nozzle core cylinder and the nozzle seat. The gap between them enters the inclined groove on the top of the nozzle core, and then sprays out through the nozzle hole on the nozzle seat to form 300μm-500μm mist droplets, which rotate and spray liquid fire extinguishing agent. A hole is vertically opened in the middle of the nozzle core, and the nozzle core is another One end is a cylinder, and its periphery is an external thread. The external thread is installed and connected to the nozzle seat. A hole is opened in the axial direction of the nozzle core cylinder to communicate with the hole of the nozzle core, so that the liquid in the nozzle head can pass through the hole. The hole of the nozzle core reaches the inclined groove and sprays out from the nozzle hole of the nozzle seat; the nozzle cover is a hollow circular rigid body, which is connected with the nozzle seat by the inner thread of the nozzle cover to fix the nozzle seat.

Preferably, the nozzle seat is a cylindrical rigid body with a diameter of 40mm and a height of 10mm, and a plurality of shrinking injection pipes with a diameter from 3mm to 1.5mm are evenly opened in the middle, and the concentric circles around the shrinking injection pipes are evenly formed. Arrange a number of spray holes with internal threads for installing the nozzle core; the nozzle core is a cylindrical rigid body with a diameter of 8mm and a height of 10mm. The top of the nozzle core is in the shape of a circular platform with a height of 3mm. A slanted groove with a width of 1.0-2.5mm and a depth of 1.0-2.5mm. The direction of the slanted groove forms an included angle of 40-50 degrees with the central axis and end surface of the cylinder. The sprayed liquid fire extinguishing agent passes through The gap between the nozzle core cylinder surface and the nozzle seat enters the oblique groove on the top of the nozzle core, and then sprays out through the nozzle hole on the nozzle seat; a 3mm hole is vertically opened in the middle of the nozzle core, and the other end of the nozzle core is 12mm in diameter , a cylinder with a height of 5mm, and its periphery is an external thread, which is used to install and connect with the nozzle seat. A hole with a diameter of 3mm is opened in the axis of the cylinder to communicate with the hole, so that the liquid in the nozzle head can pass through the hole and reach the inclined groove. Then spray out from the nozzle hole of the nozzle seat.

Preferably, the shrinking injection pipe is a cross-sectional narrowing pipe, and the inner diameters of the inlet and outlet of the narrowing injection pipe are Do and Di respectively, where Di is the inner diameter of the inlet, and Do is the inner diameter of the outlet, where Di>Do.

Preferably, the connecting pipe is a rigid empty pipe with a length of 0.3m to 1m, with external threads at both ends, and the spray head is connected to the spray gun seat through the connecting pipe; the spray gun seat is made of a rigid material and is in the shape of a pistol handle , opening a hole in it, the lower part of the hole of the spray gun seat is an internal thread for connecting the infusion pipeline, the upper part of the hole of the spray gun seat is an internal thread connected to the control valve, the control valve is connected to the spray head through a connecting pipe, and the control The valve is used as the output control switch of the liquid fire extinguishing agent; the external delivery pipeline will pass the liquid fire extinguishing agent with a certain pressure through the hole inlet of the spray gun seat, through the control valve, and then spray to the sprinkler head through the connecting pipe.

Compared with the prior art, the utility model has the following advantages:

(1) A plurality of atomizing nozzles are arranged around the spray head of the fire extinguishing agent spray gun of the present utility model, and a plurality of pipe jet ejectors with contracted section are arranged in the center. The atomizing nozzle rotates the liquid flowing through it, and after it exits, it rubs against the air to break it up and atomize it to produce a spray fluid mist field. The liquid fire extinguishing agent that flows through the pipe jet ejector is ejected from its nozzle at a higher speed to form a high-speed jet, which passes through the atomizing nozzle to generate a jet fluid mist field, and when it rubs against the air, it is broken and atomized in a farther area Generate spray liquid fire extinguishing agent mist field. Two liquid fire extinguishing agent fog fields form a banana-like fire extinguishing agent fog field.

(2) A plurality of atomizing nozzles are arranged around the sprinkler head of the fire extinguishing agent spray gun of the present utility model to generate a liquid fire extinguishing agent mist field and a pipeline jet jet liquid jet is broken and atomized in a relatively far area to generate a liquid fire extinguishing agent mist field, two The fog fields are connected to form a banana-like liquid fire extinguishing agent fog field. This kind of banana-shaped liquid fire extinguishing agent has a large fog field coverage area, strong penetrating power, easy to penetrate the fire plume, and good fire extinguishing effect.

(3) The fire extinguishing agent spray gun of the present utility model is suitable for liquid fire extinguishing agents including water and aqueous film-forming foam liquid. The fire can be extinguished in a short time, the use of less fire extinguishing agent, the cost of fire extinguishing is low, the fire extinguishing efficiency is improved, and it is convenient to use, flexible and maneuverable, time-saving and efficient, suitable for extinguishing various fires; additives can also be added to edema to dilute toxic Harmful gas leakage ambulance work.

Description of drawings

Fig. 1 is the structure schematic diagram of a kind of liquid fire extinguishing agent atomizing spray gun of the present utility model;

Fig. 2 is a schematic diagram of the nozzle structure;

Fig. 3 is a schematic diagram of a nozzle seat;

Fig. 4 is a schematic diagram of a nozzle seat;

Fig. 5 is a schematic diagram of a nozzle diagram;

Fig. 6 is a schematic diagram of a nozzle seat cover;

FIG. 7 is a schematic diagram of the spray gun seat 2 .

In the figure: 1 is the sprinkler head, 2 is the spray gun seat, 3 is the connecting pipe, 4 is the control valve, 5 is the fixing hole, which is used to fix the spray gun at ordinary times, 6 is the internal thread, 7 is the nozzle seat, 8 is the nozzle core, 9 is the nozzle cover, 10 is the nozzle hole, 11 is the shrinking spray pipe, 12 is the concave platform, 13 is the internal thread, 14 is the external thread, 15 is the internal thread, 16 is the spray head seat, 17 is the hole, 18 is the Holes, 19 are oblique grooves, 20 are internal threads, and 21 are holes.

Detailed ways

Below in conjunction with accompanying drawing, the utility model is further described by embodiment.

Basic example:

The structure of the atomizing spray gun of the utility model is shown in FIG. 1 , including a spray head 1 , a spray gun seat 2 and a connecting pipe 3 . The sprinkler head 1, as shown in Figure 2, consists of four parts: a sprinkler head seat 16, a nozzle seat 7, a nozzle core 8 and a nozzle cover 9; the nozzle core 8 is installed in the nozzle seat 7, and the nozzle seat 7 is installed in the nozzle seat In 16, the shower head cover 9 is installed on the top of the shower head seat 16 to fix the nozzle seat 7. The nozzle seat 16, as shown in Figure 3, is a hollow frustum-shaped rigid body, with an internal thread 13 at one end for connecting with the liquid delivery pipeline, and an inner concave platform 12 at the other end for installing the nozzle seat 7, The external thread 14 is connected with the nozzle cover 9 for fixed installation of the nozzle seat 7; as shown in Figure 3, the nozzle seat 7 is a cylindrical rigid body with a diameter of about 40mm and a height of about 10mm, and a plurality of apertures are evenly opened in the middle From 3 mm to about 1.5 mm shrinkable spray pipe 11, a plurality of spray holes 10 with internal threads are evenly arranged on the concentric circle around the shrinkable spray pipe 11 for installing the nozzle core 8; the nozzle core 8 is shown in Figure 5 As shown, it is a cylindrical rigid body with a diameter of about 8mm and a height of about 10mm. The nozzle core is in the shape of a circular platform, and the height of the circular platform is about 3mm. There are 3 to 4 oblique grooves 19 on the circular platform, and the width of the oblique grooves is 1.0 ～2.5mm deep 1.0～2.5mm, the direction of the oblique groove 19 forms an included angle of 40～50 degrees with the central axis and end surface of the column, and the sprayed liquid fire extinguishing agent passes between the upper cylinder surface of the nozzle core 8 and the nozzle seat 7 The gap enters the inclined groove 19 on the top of the nozzle core 8, and then sprays out through the nozzle hole 10 on the nozzle seat 7 to form 300 μm-500 μm mist droplets, which are used to spray liquid fire extinguishing agent in rotation. The middle part of the nozzle core 8 is vertically opened. A 3mm hole 18, the other end of the nozzle core 8 is a cylinder with a diameter of about 12mm and a height of about 5mm, the periphery of which is an external thread for installation and connection with the nozzle seat 7, and the axial opening of the cylinder communicates with the hole 18 A hole 17 with a diameter of 3mm allows the liquid in the nozzle head to pass through the hole 17 and reach the inclined groove 19 through the hole 18, and then spray out from the nozzle hole 10 of the nozzle seat; the nozzle cover 9 is a hollow ring as shown in Figure 6 Rigid body, the internal thread 15 is used to connect and fix the nozzle seat 7 with the nozzle seat 16 .

The pipe jet injection body of the section contraction type is shown in the contraction type injection pipe 11 in the nozzle seat 7 of Fig. 4, for having a plurality of entrances and exits in the middle part of the nozzle core 8, the inner diameters are respectively Do and Di, and the length is L The constricted injection pipe 11. Here Di is the entrance, Do is the exit, Di>Do. When the liquid fire extinguishing agent flows through the constricted spray pipe 11, a pipe jet spray body with a constricted section is formed.

The connecting pipe 3 is a rigid empty pipe with a length of about 0.3m to 1m, with external threads at both ends, and is used for the connection between the spray head 1 and the spray gun seat 2; the spray gun seat 2 is shown in Figure 7. A rigid material, shaped like a pistol handle, has a hole 21 in it. The lower part of the hole 21 is an internal thread 6 for connecting the infusion pipeline. The upper part of the hole 21 is an internal thread 20 connected to the control valve 4. It is connected with the spray head, and the control valve 4 is used as the output control switch of the liquid fire extinguishing agent. The external delivery pipeline passes the liquid fire extinguishing agent with a certain pressure through the inlet of the hole 21 of the spray gun seat 2, passes through the control valve 4, and reaches the sprinkler head 1 through the connecting pipe 3 before spraying.

When the liquid fire extinguishing agent flows through the nozzle with the shrinking section of the pipeline, it will shrink and flow, and form a high-speed liquid jet at the outlet of the shrinking section, which is the nozzle. The velocity of the liquid jet in the inlet and outlet of the nozzle is represented by Vi and Vo respectively, the inner diameters of the inlet and outlet of the nozzle are Di and Do respectively, and the length is L, then the formula can be obtained from the continuity equation: Vi×Di=Vo× Do. It can be seen from this that the function of the contraction nozzle is to convert the water with high pressure and low flow rate into a jet with low pressure and high flow rate. The pressure and flow of the system can be determined according to analogy or test methods, and the nozzle parameters can be calculated according to the estimation method. The cross-sectional area of the nozzle is determined by the flow continuity equation and the energy conservation equation: Q=AV=constant, where Q is the nozzle inlet flow rate, m ³ /s; A is the nozzle outlet cross-sectional area, m2; V is the flow velocity at the nozzle outlet, m/s.

Example 1:

Referring to accompanying drawings 1 to 7, the structure of the atomizing spray gun of the present invention is shown in FIG.

The sprinkler head 1 is composed of a sprinkler head base 16, a nozzle base 7, a nozzle core 8 and a sprinkler head cover 9 as shown in Figure 2;

The nozzle core 8 is installed in the nozzle seat 7 , the nozzle seat 7 is installed in the shower head seat 16 , and the shower head cover 9 is installed on the top of the shower head seat 16 to fix the shower head seat 16 .

As shown in Figure 3, the nozzle seat 16 is a hollow stainless steel round platform, one end is an internal thread 13 of M20, which is used to be connected with the liquid delivery pipeline, and the other end is a concave platform 12 with a depth of φ36mm and a depth of 13mm. For installing the nozzle seat 7, the external thread M42 is connected with the nozzle cover 9, and is used to fix the nozzle seat 7; as shown in Figure 3, the nozzle seat 7 is a stainless steel cylinder with a diameter of 36mm and a height of 13mm, and the middle part is evenly spaced. There is a shrinking spray pipe 11 with a diameter from 3 mm to 1.5 mm, and a plurality of spray holes 6 with internal threads are evenly arranged on the concentric circle around the shrinking spray pipe 11 for installing the nozzle core 8;

The nozzle core 8, as shown in Figure 5, is a cylindrical stainless steel rigid body with a diameter of 8 mm and a height of 10 mm. The nozzle core head is in the shape of a circular platform with a height of about 3 mm. There are four oblique grooves 19 on the circular platform. , the oblique groove is 1.5mm wide and 1.0mm deep, and the direction of the groove forms an angle of 45 degrees with the central axis and end surface of the column. The sprayed liquid fire extinguishing agent enters through the gap between the upper cylinder surface of the nozzle core 8 and the nozzle seat 7. In the inclined groove 19 on the top of the nozzle core 8, it is sprayed out through the small hole 10 on the nozzle seat 8 to form 300μm-500μm mist droplets, which are used to spray liquid fire extinguishing agent in rotation. 8mm and 4mm in height, a hole 18 of 3mm is vertically opened, the other end of the nozzle core 8 is a stainless steel cylinder with a diameter of about 10mm and a height of 3mm. Open the hole 17 with a diameter of 3mm connected to the hole 18, so that the liquid in the nozzle head passes through the hole 17 and reaches the inclined groove 19 through the hole 18, and then sprays out from the nozzle hole 10 of the nozzle seat; the nozzle cover 9 is as shown in Figure 6. One φ46mm, high 9mm stainless steel cylinder, the center is the hole of φ32mm, M42 internal thread 13 deep 7mm, internal thread 15 is used for the fixed connection of nozzle seat 16 and nozzle seat 7.

The pipe jet injection body of described cross-sectional contraction type is as shown in the contraction type injection pipe 11 in Fig. 4 nozzle seat 7, is to have an inlet and the inner diameter of outlet in the middle part of nozzle core 8 to be respectively 3mm and 1.5mm, length 13mm constricted injection pipe 11. When the liquid fire extinguishing agent flows through the constricted spray pipe 11, a pipe jet spray body with a constricted section is formed.

The connecting pipe 3 is a stainless steel pipe with a length of 0.5m and a diameter of 22mm, and the two ends are external threads of M20, which are used for the connection between the sprinkler head 1 and the spray gun seat 2; the spray gun seat 2 is as shown in Figure 7, It is made of a stainless steel material, shaped like a pistol handle, and has a hole 21 of φ18mm in it. The lower part of the hole 21 is an M20 internal thread 6 for external infusion pipelines. The upper part of the hole 21 is an M20 internal thread 20 connected to a diameter of φ18mm. The spherical liquid valve is used as the control valve 4, and the control valve 4 is connected with the sprinkler head 1 through the connecting pipe 3, and the control valve 4 is used as an output control switch of the liquid fire extinguishing agent. When the liquid fire extinguishing agent with a certain pressure in the external delivery pipeline passes through the inlet of the hole 21 of the spray gun seat 2, passes through the control valve 4, and reaches the sprinkler head 1 through the connecting pipe 3, and then sprays out.

When in use, connect the end of the nozzle with the M20 internal thread to the external liquid delivery pipeline of the M20 external thread. When the pipeline has a certain pressure of fire extinguishing agent, the fire sprinkler head can spray out a banana-like mist of fire extinguishing agent to directly cover flame, the fire extinguishing time is short and the efficiency is high.

This sprinkler head can be applied to most liquid fire extinguishing agents including water and aqueous film-forming foam liquid. When it is fixedly installed, it sprays banana-like mist fire extinguishing agent with strong ability to penetrate the fire plume and covers a large area, and its installation height is much higher than that of the existing atomized fire extinguishing nozzle; It is easy to use, flexible and safe to extinguish the fire in a short time.

Example 2:

On the same nozzle as in Example 1, the center of the nozzle seat 7 is evenly opened with 4 shrinking spray pipes 11 with a diameter from 3mm to 1.5mm, and the diameter of the shrinkable spray pipe 11 is uniform on the concentric circle of φ24. Five spray holes 10 with M8 internal threads are arranged for installing the nozzle core 8 . This type of nozzle can spray more liquid in use and produce a stronger fog field.

The part not elaborated in the description of the utility model belongs to the known technology in the art.

The above is only a preferred embodiment of the utility model, it should be pointed out that for those of ordinary skill in the art, without departing from the principle of the utility model, some improvements and modifications can also be made, these improvements and Retouching should also be regarded as the scope of protection of the present utility model.

Claims (4)

1. A liquid fire extinguishing agent atomization spray gun, characterized in that it includes a spray head (1), a spray gun seat (2) and a connecting pipe (3), and the spray head (1) is composed of a spray head seat (16), a nozzle The seat (7), the nozzle core (8) and the nozzle cover (9) are composed of four parts; the nozzle core (8) is installed in the nozzle seat (7), the nozzle seat (7) is installed in the nozzle seat (16), and the nozzle cover (9) Install on the upper part of the nozzle seat (16) to fix the nozzle seat (7). The nozzle seat (16) is a hollow frustum-shaped rigid body with an internal thread (13) at one end. The internal thread (13) and The liquid delivery pipeline is connected, and the other end is an inner concave platform (12). The nozzle seat (7) is installed in the inner concave platform (12), and the nozzle is fixedly installed by connecting the external thread (14) and the nozzle cover (9) seat (7); in the middle of the nozzle seat (7) there are a plurality of shrinking injection pipes (11) uniformly arranged on the concentric circles around the shrinking injection pipes (11). The hole (10) is used to install the nozzle core (8); the nozzle core (8) is a cylindrical rigid body, and the top of the nozzle core (8) is in the shape of a circular platform, and 3 or 4 oblique grooves (19 ), the direction of the inclined groove (19) forms an included angle of 40-50 degrees with the central axis and end surface of the cylinder, and the sprayed liquid fire extinguishing agent passes through the gap between the cylinder of the nozzle core (8) and the nozzle seat (7). The gap enters the inclined groove (19) on the top of the nozzle core (8), and then sprays out through the nozzle hole (10) on the nozzle seat (7), forming 300μm-500μm mist droplets, rotating and spraying liquid fire extinguishing agent, the nozzle core A hole (18) is vertically opened in the middle of (8), the other end of the nozzle core (8) is a cylinder, and its periphery is an external thread, which is installed and connected to the nozzle seat (7). A hole (17) communicated with the hole (18) of the nozzle core (8) is opened in the axial direction of the body, so that the liquid in the nozzle head passes through the hole (17) and reaches the oblique direction through the hole (18) of the nozzle core (8). After the groove (19), it sprays out from the nozzle hole (10) of the nozzle seat; the nozzle cover (9) is a hollow circular rigid body, which is connected with the nozzle seat (16) by the internal thread (15) of the nozzle cover (9) to secure the nozzle holder (7). 2. A liquid fire extinguishing agent atomization spray gun according to claim 1, characterized in that the nozzle seat (7) is a cylindrical rigid body with a diameter of 40 mm and a height of 10 mm, and a plurality of apertures are evenly opened in the middle of it from 3mm to 1.5mm shrinkable spray pipe (11), a plurality of spray holes (10) with internal threads are evenly arranged on the concentric circle around the shrinkable spray pipe (11), for installing the nozzle core (8); The nozzle core (8) is a cylindrical rigid body with a diameter of 8 mm and a height of 10 mm. The top of the nozzle core (8) is in the shape of a circular platform with a height of 3 mm. There are 3 or 4 oblique grooves (19) on the circular platform. The groove width is 1.0-2.5mm, the groove depth is 1.0-2.5mm, the direction of the oblique groove (19) forms an included angle of 40-50 degrees with the central axis and end surface of the cylinder, and the sprayed liquid fire extinguishing agent passes through the nozzle core (8 ) cylinder and the nozzle seat (7) enters the oblique groove (19) on the top of the nozzle core (8), and then sprays out through the nozzle hole (10) on the nozzle seat (7); the nozzle core (8) ) is vertically opened with a 3mm hole (18), the other end of the nozzle core (8) is a cylinder with a diameter of 12mm and a height of 5mm, and its periphery is an external thread for installation and connection with the nozzle seat (7). A hole (17) with a diameter of 3 mm is opened in the axial direction of the body to communicate with the hole (18), so that the liquid in the nozzle head passes through the hole (17) and reaches the inclined groove (19) through the hole (18) and then flows from the nozzle hole (10) of the nozzle seat. ) ejected. 3. A liquid fire extinguishing agent atomizing spray gun according to claim 1 or 2, characterized in that, the shrinking spray pipe (11) is a pipe with a shrinking section, and the shrinking spray pipe (11 ) The inner diameters of the inlet and outlet are Do and Di respectively, Di is the inner diameter of the inlet, and Do is the inner diameter of the outlet, where Di>Do. 4. A liquid fire extinguishing agent atomizing spray gun according to claim 3, characterized in that, the connecting pipe (3) is a rigid empty pipe with a length of 0.3m to 1m, both ends of which are externally threaded, and the spray head ( 1) Connect the spray gun seat (2) through the connecting pipe (3); the spray gun seat (2) is made of a rigid material in the shape of a pistol handle, and a hole (21) is opened in it, and the spray gun seat (2) The lower part of the hole (21) is an internal thread (6) for connecting the infusion pipeline, and the upper part of the hole (21) of the spray gun seat (2) is an internal thread (20) connected to the control valve (4), the control valve ( 4) Connect the sprinkler head through the connecting pipe (3), and the control valve (4) is used as the output control switch of the liquid fire extinguishing agent; the external delivery pipeline will pass the liquid fire extinguishing agent with a certain pressure through the hole (21) from the spray gun seat (2). ) inlet, through the control valve (4), through the connecting pipe (3) to the sprinkler head (1) and spray out.

Images