Fire monitor head capable of electrically adjusting flow in spraying process

Abstract

The invention discloses a fire monitor head capable of electrically adjusting the flow in the spraying process, the fire monitor head comprises a monitor body and a monitor barrel, an electric adjuster capable of adjusting the water flow is connected between the monitor barrel and the monitor body, the electric adjuster comprises an outer sleeve and an inner sleeve which are mutually sleeved, a first adjusting assembly is arranged in the inner sleeve, and a second adjusting assembly is arranged in the inner sleeve. A second adjusting assembly is arranged at the end of the inner sleeve. The invention relates to the technical field of fire fighting equipment, and adopts a first adjusting assembly and a second adjusting assembly to adjust the water supply amount of a gun barrel in a sectional manner. Through cooperative work of the two assemblies, accurate control over the water flow can be achieved, it can be guaranteed that the adjusted water flow flows out at the center, and the bias flow phenomenon caused by a traditional adjusting valve is avoided. Due to the adoption of a double-section type adjusting mechanism, the adjusted water flow can flow out at the center, and the spraying coverage range and the fire extinguishing effect are remarkably improved.

Description

Technical Field

[0001] The present invention relates to the technical field of fire-fighting equipment, and particularly to a fire-fighting cannon head that can electrically adjust the flow rate during spraying. Background Art

[0002] As the core execution component of a fixed / mobile fire-fighting system, the core function of a fire-fighting cannon head is to achieve long-distance fire extinguishing (the range can reach more than 150 meters) through the spraying of high-pressure water flow or other media. The traditional cannon head structure consists of a cannon body, a barrel, a nozzle, an inlet valve, and a mechanical adjustment valve. Among them, the adjustment valve, as the key component for flow control, generally adopts a ball valve structure. As shown in Figure 1 In the figure, the ball valve changes the flow-through area by rotating the angle of the valve core. Its working principle is: the larger the inclination angle of the valve core, the smaller the flow-through cross-section, the greater the water flow resistance, and the corresponding reduction in flow rate. When the ball valve core is tilted and adjusted, for example, when the angle > 15°, the water flow is forced to flow out unidirectionally from the edge of the valve core, forming a "biased flow effect". When the valve core is tilted by 30°, the impact angle deviation of the water flow hitting the inner wall of the barrel reaches 22°, resulting in a decrease in the water flow concentration at the nozzle inlet. This kind of biased flow can be compensated by inertia in the columnar water flow mode, but in the umbrella-shaped spray, there is an obvious "flow interruption area" in the spray cone surface, resulting in a decrease in the fire extinguishing coverage rate. Moreover, the adjustment of the mechanical ball valve has physical inertia. It takes 3.2 ± 0.5 seconds from fully open to closed, and the adjustment accuracy is greatly affected by the operator's experience. Summary of the Invention

[0003] Aiming at the deficiencies of the prior art, the present invention provides a fire-fighting cannon head that can electrically adjust the flow rate during spraying, and solves the problem that the existing barrel uses a ball valve to adjust the flow rate, resulting in the water flow flowing out unidirectionally from the edge of the valve core and affecting the spraying effect of the nozzle.

[0004] To achieve the above object, the present invention is realized through the following technical solutions: A fire-fighting cannon head that can electrically adjust the flow rate during spraying, including a cannon body and a barrel. An electric regulator for adjusting the water flow rate is connected between the barrel and the cannon body. The electric regulator includes an outer sleeve and an inner sleeve that are sleeved with each other, and a cavity is formed between the two. A rotatable member that can be driven to rotate is provided in the cavity. A push-stop sleeve is threadedly connected to the inner side of the rotatable member, and the push-stop sleeve slides translationally with the inner sleeve. A first adjustment component is provided inside the inner sleeve, including a plurality of front blades. Each front blade is rotatably arranged in the inner cavity of the inner sleeve and can be pushed by the push-stop sleeve. A second adjustment component is provided at the end of the inner sleeve, including a plurality of rear blades. The plurality of rear blades are distributed in an annular array to form a ring with a central circle in the center. A positioning ring is provided outside the rear blades. The plurality of rear blades are rotatably connected between the rotatable member and the positioning ring to adjust the size of the central circle.

[0005] Preferably, the rear blades are arc-shaped, the inner edge is an arc edge, and a plurality of the rear blades are distributed in a circular array and form a circular central circle through each arc edge.

[0006] Preferably, a first connecting column and a second connecting column are respectively arranged on the upper and lower surfaces of the outer end of the rear blade, and the first connecting column and the second connecting column are respectively connected to the positioning ring and the rotating member; wherein, when the rotating member rotates, the rear blade is driven to rotate around the second connecting column as the axis to adjust the size of the central circle.

[0007] Preferably, the rotating member includes a first rotating body and a second rotating body connected to one end of the first rotating body, and the first rotating body is rotatably connected to the inner sleeve through a bearing.

[0008] Preferably, the outer wall surface of the push-stop sleeve is threadedly connected to the second rotating body; a strip-shaped slot is opened on the inner side of the end of the push-stop sleeve, and a strip-shaped boss adapted to the strip-shaped slot is arranged on the outer wall surface of the inner sleeve.

[0009] Preferably, a driving assembly for driving the first rotating body to rotate is arranged on the outer sleeve, and the driving assembly includes: A motor, fixed on the outer sleeve; A gear, fixed on the output end of the motor; A toothed ring, fixed on the outer ring of the first rotating body and meshed with the gear.

[0010] Preferably, a gear set is arranged between the front blade and the push-stop sleeve, the gear set includes a rack and a driven gear that mesh with each other, the rack is fixed to the push-stop sleeve, an opening is formed on the wall surface of the inner sleeve, the driven gear is rotatably connected at the opening, and the driven gear is connected to the front blade through a bent arm.

[0011] Preferably, the front blade is umbrella-shaped, and a plurality of the umbrella-shaped front blades enclose to form a ring with a hole in the center.

[0012] Preferably, a sealing ring is arranged between the push-stop sleeve and the inner sleeve, and the sealing ring is arranged on both sides of the rack.

[0013] Preferably, a front stop ring and a rear stop ring are respectively arranged on the inner sides of both ends of the outer sleeve, and the front stop ring and the rear stop ring respectively abut against the inner sleeve and the positioning ring.

[0014] Advantages of the present invention: By using a fire fighting cannon head capable of electrically adjusting the flow rate during the spraying process provided by the present invention, the first adjusting component and the second adjusting component are adopted to adjust the water supply to the barrel in a segmented manner. The first adjusting component is composed of multiple front blades, and the front blades are driven by a servo motor to flip, forming "progressive throttling". When the flipping angle of the blades changes from 0° to 90°, the flow area changes non-linearly. The second adjusting component adopts multiple rear blades, which open and close circumferentially along the central axis, also forming "progressive throttling". The coordinated work of the two components can not only achieve precise control of the water flow rate, but also ensure that the adjusted water flow flows out at the center, avoiding the phenomenon of uneven flow caused by traditional regulating valves.

[0015] Due to the adoption of a two-stage adjustment mechanism, it can ensure that the adjusted water flow flows out at the center. After this uniformly distributed water flow enters the nozzle, the nozzle can effectively disperse it into an umbrella-shaped spray, significantly improving the coverage range and fire extinguishing effect of the spray. Compared with the traditional fire fighting cannon head, when spraying an umbrella-shaped spray, it can make the spray shape more regular and the spray range larger, thus extinguishing the fire more effectively. Brief Description of the Drawings

[0016] Figure 1 Schematic diagram of the structure of a prior art fire fighting cannon; Figure 2 Schematic diagram of the structure of the fire fighting cannon of the present invention; Figure 3 Front view of the electric regulator of the present invention; Figure 4 For the present invention Figure 3 Schematic diagram of the A-A cross-section in Figure 5 For the present invention Figure 4 Schematic diagram after the front blades are closed in Figure 6 For the present invention Figure 3 Right view; Figure 7 Schematic diagram of the structure of the rear blades of the present invention; Figure 8 Schematic diagram of the structure of the arc-shaped blades of the present invention.

[0017] Explanation of the reference numerals in the drawings: 1, barrel; 2, outer sleeve; 3, motor; 4, gear; 5, first rotating body; 6, gear ring; 7, rack; 8, opening; 9, push stop sleeve; 10, strip-shaped slot; 11, second rotating body; 12, cavity; 13, rear blade; 14, front stop ring; 15, rear stop ring; 16, driven gear; 17, front blade; 18, inner sleeve; 19, positioning ring; 20, center ring; 21, arc edge; 22, first connecting column; 23, second connecting column. Detailed Description of the Invention

[0018] For a better explanation of the present invention for easy understanding, the present invention will be described in detail below in conjunction with the accompanying drawings through specific embodiments. The present invention discloses a fire fighting cannon head capable of electrically adjusting the flow rate during the spraying process, including a cannon body and a barrel. An electric regulator for adjusting the water liquid flow rate is connected between the barrel and the cannon body. The electric regulator includes an outer sleeve and an inner sleeve that are sleeved with each other. A first adjustment component is arranged inside the inner sleeve, and a second adjustment component is arranged at the end of the inner sleeve. The water supply amount to the cannon head of the barrel is adjusted in a segmented manner through the first adjustment component and the second adjustment component, so that the adjusted water flow is sprayed to the cannon head at the center, realizing that the adjusted water amount can impact at the center of the cannon head, facilitating the regulator at the cannon head to evenly adjust the water flow.

[0019] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. As long as the effects of the present invention can be exerted, various changes can be made to the implementation solutions.

[0020] Those skilled in the art shall connect the components in this case in sequence. For the specific connection and operation sequence, reference should be made to the following working principle. The detailed connection means are well-known techniques in the art. The following mainly introduces the working principle and process.

[0021] As Figures 2 to 8 shown, the fire fighting cannon head proposed in the embodiment of the present application includes a cannon body and a barrel 1. An electric regulator for adjusting the water liquid flow rate is connected between the barrel 1 and the cannon body. The electric regulator has a first adjustment component and a second adjustment component, and adjusts the water supply amount to the barrel 1 in a segmented manner, and makes the adjusted water flow be sprayed to the cannon head at the center.

[0022] In this embodiment, as Figure 3 shown, the electric regulator includes an outer sleeve 2 and an inner sleeve 18 that are sleeved with each other, and a cavity 12 is formed therebetween. A rotatable member that can be driven to rotate is arranged in the cavity 12. The rotatable member includes a first rotating body 5 and a second rotating body 11 connected to one end of the first rotating body 5. The first rotating body 5 is rotatably connected to the inner sleeve 18 through a bearing. Among them, the second rotating body 11 is connected to the first rotating body 5 through a set screw, and the second rotating body 11 rotates synchronously when the first rotating body 5 is driven to rotate. It should be noted that a concave groove is formed inside the second rotating body 11.

[0023] Exemplarily, a driving component for driving the first rotating body 5 to rotate is arranged on the outer sleeve 2. The driving component includes a motor 3, a gear 4, and a toothed ring 6. The motor 3 is fixed on the outer sleeve 2; the gear 4 is fixed on the output end of the motor 3; the toothed ring 6 is fixed on the outer ring of the first rotating body 5 and meshes with the gear 4.

[0024] In specific implementation, the motor 3 operates to drive the gear ring 6 and the first rotating body 5 to rotate forward and backward through the gear 4, so that the first ring body 5 and the second rotating body 11 rotate forward and backward simultaneously.

[0025] Furthermore, a push-stop sleeve 9 is threadedly connected to the inner side of the rotating member. The push-stop sleeve 9 is arranged inside the concave groove, and the push-stop sleeve 9 translates and slides on the outside of the inner sleeve 18.

[0026] To achieve the translation of the push-stop sleeve 9, the outer wall surface of the push-stop sleeve 9 is threadedly connected to the second rotating body 11; and, a strip-shaped slot 10 is opened inside the end of the push-stop sleeve 9, and a strip-shaped boss adapted to the strip-shaped slot 10 is arranged on the outer wall surface of the inner sleeve 18. When the first rotating body 5 rotates, through the threaded connection with the push-stop sleeve 9, the push-stop sleeve 9 moves forward and backward directionally in the concave groove through the cooperation of the strip-shaped boss and the strip-shaped slot 10.

[0027] In this embodiment, the first adjusting assembly is arranged inside the inner sleeve 18 and includes a plurality of front blades 17. Each front blade 17 is arranged in the inner cavity of the inner sleeve 18 in a turnable manner and can be pushed by the push-stop sleeve 9.

[0028] Specifically, as Figure 3 shown, a gear set is arranged between the front blade 17 and the push-stop sleeve 9. The gear set includes a rack 7 and a driven gear 16 that mesh with each other. The rack 7 is fixed to the push-stop sleeve 9. An opening 8 is formed on the wall surface of the inner sleeve 18. The driven gear 16 is rotatably connected at the opening 8, and the driven gear 16 is connected to the front blade 17 through a bent arm. During specific operation, when the push-stop sleeve 9 advances, the rack 7 meshes with the driven gear 16. At this time, the driven gear 16 rotates and the front blade 17 is turned through the bent arm. The flow of water is blocked by a plurality of front blades 17, reducing the inflow of water to the gun head. When the push-stop sleeve 9 moves backward and resets, the front blade 17 is reset through the meshing of the rack 7 and the driven gear 16 and fits on the inner wall surface of the inner sleeve 18 to form the maximum flow rate.

[0029] As Figure 4 and Figure 5 shown, among them, the front blade 17 in this embodiment is umbrella-shaped. After a plurality of umbrella-shaped front blades 17 are enclosed, a ring with a hole in the center is formed. Exemplarily, there are four front blades 17, which are circumferentially distributed inside the inner sleeve 18. When the front blade 17 is turned, a plurality of front blades 17 are buckled to achieve the maximum blocking effect, and only the hole at the center is left for the water liquid to flow out.

[0030] Furthermore, a sealing ring is arranged between the push-stop sleeve 9 and the inner sleeve 18. The sealing ring is arranged on both sides of the rack 7 to form a seal at the opening 8 to prevent water liquid leakage.

[0031] The flipping and opening / closing flow adjustment method can gradually reduce the liquid outflow volume during the slow flipping process of the front blade 17 and ensure that the outflowing liquid flows out at the center.

[0032] In this embodiment, as Figure 3 and Figure 6 shown, the second adjustment component is arranged at the end of the inner sleeve 18 and cooperates with the first adjustment component to form a two-stage water volume adjustment. The second adjustment component includes a plurality of rear blades 13, and the plurality of rear blades 13 are distributed in an annular array to form an annular shape with a central circle 20 at the center; a positioning ring 19 is arranged outside the rear blades 13, and the plurality of rear blades 13 are rotatably connected between the rotating part and the positioning ring 19 to adjust the size of the central circle 20.

[0033] Specifically, as Figure 7 and Figure 8 shown, the rear blade 13 is arc-shaped, the inner edge is an arc edge 21, and after the plurality of rear blades 13 are distributed in an annular array, an annular central circle 20 is formed through each arc edge 21.

[0034] On the upper and lower surfaces of the outer end of the rear blade 13, a first connecting column 22 and a second connecting column 23 are respectively arranged, and the first connecting column 22 and the second connecting column 23 are respectively connected to the positioning ring 19 and the rotating part; wherein, when the rotating part rotates, the displacement of the first connecting column 22 drives the rear blade 13 to rotate around the second connecting column 23 as the axis to adjust the size of the central circle 20, forming a circumferential adjustment.

[0035] By gradually reducing and increasing the liquid outflow volume during the circumferential opening and closing process of the plurality of rear blades 13, the inflow volume of the water flowing into the gun head is adjusted, and in cooperation with the front blade 17 at the front end, a two-stage adjustment is formed, and it is ensured that the adjusted water flow flows out at the center.

[0036] In addition, front stop rings 14 and rear stop rings 15 are respectively threadedly connected to the inner sides of both ends of the outer sleeve 2, and the front stop rings 14 and the rear stop rings 15 respectively abut against the inner sleeve 18 and the positioning ring 19 to form the limitation and fixation of the inner sleeve 18 and the positioning ring 19.

[0037] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A fire monitor head capable of electrically adjusting flow rate during spraying, comprising a gun body and a gun barrel, characterized in that: An electric regulator capable of adjusting the flow of water is connected between the barrel and the gun body. The electric regulator comprises an outer sleeve and an inner sleeve which are sleeved together, and a cavity is formed between the two. A rotating member which can be driven to rotate is arranged in the cavity. A thrust sleeve is threadedly connected to the inner side of the rotating member, and the thrust sleeve and the inner sleeve can translate and slide. The inner sleeve is provided with a first adjustment assembly, including a plurality of front blades, each of which can be pushed by the push-stop sleeve and flipped in the inner cavity of the inner sleeve; A second adjustment component is provided at the end of the inner sleeve, including a plurality of rear blades, which are distributed in a circular array to form a ring with a center circle in the center; a positioning ring is provided on the outside of the rear blades, and the plurality of rear blades are rotatably connected between the rotating member and the positioning ring to adjust the size of the center circle.

2. According to claim 1, a fire monitor head capable of electrically adjusting flow rate during spraying, characterized in that: The rear blade is arc-shaped, and the inner edge is an arc-shaped edge. A plurality of the rear blades are distributed in an annular array and form an annular central circle through each arc-shaped edge.

3. According to claim 1, a fire monitor head capable of electrically adjusting flow rate during spraying, characterized in that: The first connecting column and the second connecting column are respectively arranged on the upper and lower sides of the outer end of the rear blade, and the first connecting column and the second connecting column are respectively connected to the positioning ring and the rotating member; wherein, when the rotating member rotates, the rear blade is driven to rotate with the second connecting column as the axis to adjust the size of the center circle.

4. A fire monitor head capable of electrically adjusting flow rate during spraying according to claim 1, characterized in that: The rotating member comprises a first rotating body and a second rotating body connected to one end of the first rotating body, and the first rotating body is rotatably connected to the inner sleeve through a bearing.

5. The fire monitor head capable of electrically adjusting flow rate during spraying according to claim 1, characterized in that: The outer wall surface of the push sleeve is threadedly connected to the second rotating body; a strip groove is provided on the inner side of the end of the push sleeve, and a strip boss adapted to the strip groove is provided on the outer wall surface of the inner sleeve.

6. The fire monitor head capable of electrically adjusting flow rate during spraying according to claim 1, characterized in that: The outer sleeve is provided with a driving assembly capable of driving the first rotating body to rotate, and the driving assembly comprises: A motor, fixed on the outer sleeve; A gear, fixed to the output end of the motor; The gear ring is fixed on the outer ring of the first rotating body and meshes with the gear.

7. The fire monitor head capable of electrically adjusting flow rate during spraying according to claim 1, characterized in that: A gear set is arranged between the front blade and the thrust sleeve, and the gear set includes a rack and a driven gear that mesh with each other. The rack is fixed to the thrust sleeve, and an opening is opened on the wall surface of the inner sleeve. The driven gear is rotatably connected to the opening, and the driven gear is connected to the front blade through a bent arm.

8. A fire monitor head capable of electrically adjusting flow rate during spraying according to claim 1 or 7, characterized in that: The front blades are umbrella-shaped, and a plurality of umbrella-shaped front blades are enclosed to form a circular ring with a hole in the center.

9. The fire monitor head capable of electrically adjusting flow rate during spraying according to claim 1, characterized in that: A sealing ring is arranged between the thrust sleeve and the inner sleeve, and the sealing ring is arranged on both sides of the rack.

10. The fire monitor head capable of electrically adjusting flow rate during spraying according to claim 1, characterized in that: A front stop ring and a rear stop ring are respectively arranged on the inner sides of both ends of the outer sleeve, and the front stop ring and the rear stop ring are respectively pressed against the inner sleeve and the positioning ring.

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