Fire monitor nozzle capable of automatically stabilizing flow

Abstract

The utility model discloses a fire monitor nozzle capable of automatically stabilizing flow. The fire monitor nozzle comprises a spray pipe, a water flow core, an adjusting screw rod and a tail adjusting block. The water flow core is tensioned at the spray pipe water outlet through the water flow core spring, and the tail adjusting block is tensioned at the spray pipe water inlet through the tail spring. When the system generates pressure, the water flow core moves under the thrust of water flow to adjust the overflowing area; when the pressure is further increased, the tail adjusting block moves to reduce the overflowing area, and dynamic balance of the flow is achieved. When the water flow core is in a static state, the water flow core is attached to form sealing. The device is simple in structure, accurate in flow adjustment and capable of keeping flow stable under the pressure fluctuation condition, fire extinguishing efficiency is improved, and the service life of equipment is prolonged.

Description

Technical Field

[0001] This utility model relates to the field of fire protection equipment technology, specifically to a fire monitor nozzle with automatic and stable flow rate. Background Technology

[0002] Fire sprinkler systems, as key components of modern fire control systems, play an indispensable role in fire suppression. In recent years, with the expansion of building scale and the continuous development of fire suppression technology, the technical level of fire-fighting equipment has also been continuously improving. Traditional fire monitor nozzles mostly adopt a fixed-opening structure, and their design is based on a simple fluid dynamics model with constant flow, which can meet basic fire suppression needs within a certain range. However, in practical applications, fire suppression scenarios often involve complex pressure changes and diverse spraying requirements. Fixed-opening fire monitor nozzles cannot flexibly cope with these changes, especially when the system pressure fluctuates significantly, often making it difficult to simultaneously ensure flow stability and spraying effectiveness. This technical limitation directly affects fire suppression efficiency and may even lead to failure to achieve the desired fire suppression effect due to excessively high or low flow rates.

[0003] The performance optimization of existing fire monitor nozzles under pressure variations mainly relies on external control methods, such as manual adjustment or the addition of additional pressure regulating devices. However, these methods are not only complex and costly, but can also lead to delays due to improper operation. Especially in high-pressure scenarios, nonlinear changes in jet flow can cause problems such as water waste and accelerated wear and tear on fire-fighting equipment. Further analysis reveals that traditional technologies have shortcomings in the following aspects: First, fixed flow design is difficult to adapt to system pressure fluctuations, resulting in inaccurate control of jet flow in actual use; second, the complexity of flow regulating devices increases maintenance difficulty and system failure rate; finally, existing technologies have not fully considered the dynamic impact of pressure changes on flow in terms of energy saving and efficient resource utilization.

[0004] To address the aforementioned problems, this invention proposes an automatically stabilized flow rate fire monitor nozzle. By combining an elastic structure with a flow regulation mechanism, it can achieve automatic flow balance and dynamic adaptation even under significant system pressure fluctuations. This technological breakthrough effectively overcomes the limitations of traditional nozzles with fixed flow rates, while significantly improving spray performance and resource utilization efficiency, providing a new technical path for the intelligent and efficient development of fire-fighting equipment. Utility Model Content

[0005] The purpose of this section is to outline some aspects of embodiments of the present invention and to briefly describe some preferred embodiments. Simplifications or omissions may be made in this section, as well as in the abstract and title of this application, to avoid obscuring the purpose of these documents; however, such simplifications or omissions should not be construed as limiting the scope of the present invention.

[0006] In view of the technical problems existing in the prior art, the present invention provides an automatic stable flow fire monitor nozzle, including a nozzle, a water flow core, an adjusting screw, and a tail adjusting block. The adjusting screw is disposed in the nozzle, the water flow core is sleeved on one end of the adjusting screw, and the tail adjusting block is sleeved on the other end of the adjusting screw. The water flow core is tensioned at the outlet of the nozzle, and the tail adjusting block is tensioned near the inlet of the nozzle.

[0007] As a preferred technical solution for an automatic and stable flow fire monitor nozzle, the outlet is funnel-shaped, and the water flow core can be tightly fitted to the outlet.

[0008] As a preferred technical solution for an automatic and stable flow fire monitor nozzle, a water flow core cover is fixed to one end of the adjusting screw near the water outlet, and a water flow core spring is arranged between the water flow core cover and the water flow core. A tail adjusting cover is fixed to the other end of the adjusting screw, and a tail spring is arranged between the tail adjusting cover and the tail adjusting block.

[0009] As a preferred technical solution for an automatic and stable flow fire monitor nozzle, a tail mounting block is provided on the nozzle near the water inlet, the tail mounting block has a mounting groove, and the tail adjusting block is disposed in the mounting groove.

[0010] As a preferred technical solution for an automatic and stable flow fire monitor nozzle, a flow gap is provided between the adjusting screw and the tail mounting block, and the nozzle flows through the flow gap into the mounting groove.

[0011] The fire monitor nozzle with automatic flow stabilization proposed in this application has significant advantages. Firstly, by introducing a spring structure and dynamic adjustment mechanism between the water flow core and the tail regulating block, automatic and stable flow control is achieved under system pressure fluctuations. When the pressure is low, the water flow core spring provides initial adjustment, while under higher pressure, the tail regulating block further reduces the flow area through the reaction force of the tail spring, effectively avoiding excessive flow caused by pressure increases. This two-stage adjustment design ensures stable operation of the fire monitor in both high-pressure and low-pressure scenarios.

[0012] Secondly, the device has a simple and compact structure. The ingenious combination of the nozzle, adjusting screw, and spring not only reduces production costs but also minimizes maintenance complexity. Simultaneously, the tight sealing design between the flared outlet and the water flow core prevents external impurities from entering when the device is static, effectively extending its service life.

[0013] Finally, the optimized flow gap design between the adjusting screw and the tail mounting block improves the pressure distribution of the water flow and enhances the response sensitivity of the tail adjusting block, ensuring rapid response of the device in dynamic environments. This design significantly improves fire extinguishing efficiency, conserves water resources, and meets the demands of modern fire-fighting equipment for intelligence and high efficiency. Attached Figure Description

[0014] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. Among them:

[0015] Figure 1 This is a schematic diagram of the fire monitor nozzle being closed when there is no water flow in the system.

[0016] Figure 2 This is a schematic diagram of the fire monitor nozzle as the system pressure P continuously increases;

[0017] Figure 3 This is a schematic diagram of the fire monitor nozzle when the system pressure P continuously increases to a critical value.

[0018] Reference numerals: 10. Nozzle; 11. Water core; 12. Adjusting screw; 13. Tail adjusting block; 14. Water outlet; 15. Water inlet; 16. Water core cover; 17. Water core spring; 18. Tail adjusting cover; 19. Tail spring; 20. Tail mounting block; 21. Flow gap; Detailed Implementation

[0019] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings.

[0020] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Those skilled in the art can make similar extensions without departing from the spirit of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0021] Secondly, the term "an embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The phrase "in one embodiment" appearing in different places in this specification does not necessarily refer to the same embodiment, nor is it a single or selective embodiment that excludes other embodiments.

[0022] Secondly, this utility model is described in detail with reference to the schematic diagrams. When describing the embodiments of this utility model, for ease of explanation, the cross-sectional views illustrating the device structure may be partially enlarged, not adhering to the usual scale. Furthermore, the schematic diagrams are merely examples and should not limit the scope of protection of this utility model. In addition, actual manufacturing should include the three-dimensional spatial dimensions of length, width, and depth.

[0023] Please refer to Figure 1 The present invention relates to an automatically stabilized flow fire monitor nozzle, the overall structure of which includes a nozzle 10, a water flow core 11, an adjusting screw 12, a tail adjusting block 13, a spring, and related fixing components. The adjusting screw 12 passes through the nozzle 10, with one end threadedly connected to a cover of the water flow core 11, and the other end threadedly connected to a tail adjusting cover 18. The water flow core 11 is sleeved on one end of the adjusting screw 12 and located at the outlet 14, elastically connected to the cover of the water flow core 11 via a spring. The tail adjusting block 13 is sleeved on the end of the adjusting screw 12 near the inlet 15, elastically connected to the tail adjusting cover 18 via a tail spring 19. This design allows both the water flow core 11 and the tail adjusting block 13 to move axially along the adjusting screw 12, forming a dynamic adjustment mechanism.

[0024] The nozzle 10 has a funnel-shaped outlet 14. When static, the water flow core 11 is tightly fitted to the outlet 14 by the tension of its spring, forming a reliable seal. When there is no water flow in the system, the water flow core 11 closes the outlet 14 to prevent external impurities from entering the device. In dynamic operation, the water flow core 11 can slide axially along the adjusting screw 12 under water pressure, forming a flow area S, and is kept flowing smoothly by the limiting effect of the water flow core 11 cover. The tail adjustment block 13 is tensioned within the tail mounting block 20 near the inlet 15 by the tail spring 19, and its position dynamically adjusts with changes in system pressure.

[0025] The tail adjustment block 13 is positioned in the mounting groove of the tail mounting block 20 at the inlet 15 of the nozzle 10. Water flow is guided into the mounting groove via a flow gap 21 between the adjusting screw 12 and the tail mounting block 20. The flow gap 21 ensures smooth water flow to the tail adjustment block 13, providing thrust and optimizing the water pressure distribution, thus improving the response sensitivity of the tail adjustment block 13. The tail adjustment block 13 slides axially under the combined action of the water thrust and the reaction force of the tail spring 19. Its movement directly affects the flow area of ​​the water core 11, thereby dynamically adjusting the flow rate.

[0026] During operation, in the initial state (no water flow), the water flow core 11 is tensioned at the funnel-shaped outlet 14 of the nozzle 10 by the water flow core 11 spring, and the tail regulating block 13 is kept stationary by the tail spring 19. All components are in their initial equilibrium positions. When the system generates water flow and applies pressure, the water flow core 11 slides outward under the thrust of the water flow, contacting the water flow core 11 cover to form an initial flow area S. As the system pressure increases, the tail regulating block 13 experiences a greater water flow thrust and begins to move axially under the constraint of the spring reaction force, thereby reducing the flow area S of the water flow core 11. Under high pressure conditions, the movement of the tail regulating block 13 achieves precise flow control, ensuring stable system flow. When the system pressure decreases, the reaction force of the tail spring 19 pushes the tail regulating block 13 back to its initial position, and the water flow core 11 returns to the sealed state of the outlet 14. The entire device is ready to cope with the next pressure fluctuation. Specifically:

[0027] When there is no water flow in the system, the fire monitor nozzle is in a closed state (e.g., Figure 1 (As shown). At this time, the water flow core 11 is tightly fitted to the outlet 14 of the nozzle 10, forming a seal to prevent impurities from entering the system, and all elastic components are not subjected to compression or external force. When the system starts supplying water and generates pressure P, assuming the force-bearing area of ​​the water flow core 11 is A and the force-bearing area of ​​the tail adjusting block 13 is B, with A < B, the water flow core 11 gradually moves outward under the thrust of the water flow until it contacts the end face of the water flow core 11 cap. During this stage, the spring of the water flow core 11 is slightly compressed due to its small stiffness coefficient, forming an initial flow area S. In this state, if the system pressure is low, the tail adjusting block 13 remains stationary because the critical condition has not been reached, and the entire system is in equilibrium.

[0028] As the system pressure P continues to increase, the balance between the forces on the water flow core 11 and the tail regulating block 13 gradually changes. When P·A+N≥P·B (e.g., Figure 2 As shown, the initial thrust N of the tail spring 19 on the tail regulating block 13 prevents displacement of the tail regulating block 13, keeps the flow area S constant, and stabilizes the system flow rate. However, when the pressure further increases and reaches the critical value P·A+N<P·B, the static state of the tail regulating block is broken, and it begins to move axially under the drive of the water flow thrust and the reaction force of the tail spring. As the tail regulating block moves, the reaction force generated by the spring increases, which is expressed by the formula N+K·L, where K is the spring constant and L is the displacement distance of the tail regulating block. Finally, the system reaches a new equilibrium condition:

[0029] P·A+N+K·L=P·B

[0030] At this time, the movement of the tail regulating block causes the flow area S of the water flow core to decrease, thereby controlling the flow rate change and ensuring that the system flow rate remains constant or changes only slightly (e.g., Figure 3 (As shown).

[0031] As the system pressure begins to decrease, the thrust P·B of the water flow on the tail regulating block decreases, and the reaction force of the tail spring gradually becomes dominant, pushing the tail regulating block back to its initial position. As the tail regulating block resets, the flow area S of the water core increases, gradually returning to its initial state. Finally, when the system pressure drops to a lower level, the tail regulating block returns completely to its initial position, and the entire device is once again in a state of static equilibrium, ready to cope with the next pressure change.

[0032] The embodiments are only used to illustrate the technical solutions of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of this utility model without departing from the spirit and scope of the technical solutions of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. A fire monitor nozzle for automatically stabilizing a flow rate, characterized by, The nozzle (10), water flow core (11), adjusting screw (12) and tail adjusting block (13) are included, the adjusting screw (12) is arranged in the nozzle (10), the water flow core (11) is sleeved on one end of the adjusting screw (12), the tail adjusting block (13) is sleeved on the other end of the adjusting screw (12), the water flow core (11) is tensioned at the water outlet (14) of the nozzle (10), and the tail adjusting block (13) is tensioned near the water inlet (15) of the nozzle (10).

2. The automatically stabilizing flow rate fire monitor tip of claim 1, wherein, The water outlet (14) is trumpet-shaped, and the water flow core (11) can be closely attached to the water outlet (14).

3. The automatically stabilizing flow rate fire monitor tip of claim 1, wherein, The adjusting screw (12) is fixed with a water flow core (11) cover near one end of the water outlet (14), a water flow core (11) spring is arranged between the water flow core (11) cover and the water flow core (11), the other end of the adjusting screw (12) is fixed with a tail adjusting cover (18), and a tail spring (19) is arranged between the tail adjusting cover (18) and the tail adjusting block (13).

4. The automatically stabilizing flow rate fire monitor tip of claim 3, wherein, The nozzle (10) is provided with a tail mounting block (20) near the water inlet (15), the tail mounting block (20) is provided with a mounting groove, and the tail adjusting block (13) is arranged in the mounting groove.

5. The automatically stabilizing flow rate fire monitor tip of claim 4, wherein, A flow-through gap (21) is arranged between the adjusting screw (12) and the tail mounting block (20), and the nozzle (10) flows through the mounting groove through the flow-through gap (21).

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