High-stability fire-fighting spray head

Abstract

The utility model relates to the technical field of fire-fighting spray heads, in particular to a high-stability fire-fighting spray head which comprises an upper block, a glass ball, a dispersion block and a plurality of connecting rods, a channel communicated with a fire-fighting pipeline is arranged on the upper block in a penetrating mode, the connecting rods are connected with the upper block and the dispersion block, and the glass ball blocks an opening of the channel of the upper block. The connecting rod is fixedly connected with the upper block through a tension spring, the connecting rod slides towards the upper block on the dispersing block, and the glass ball is located between the dispersing block and the upper block; pressure is applied to the glass ball through the tension spring, the connecting rod and the dispersion block, then the glass ball applies pressure to the opening of the channel and seals the opening of the channel, and when liquid water or solid water in the channel applies large pressure to the glass ball, the glass ball is driven to move downwards, then the pressure in the channel is released, and the pressure in the channel is reduced. And when a fire does not happen to the glass ball, that is, water with overlarge pressure is introduced into the fire fighting pipeline, and water in the fire fighting pipeline is frozen and expanded, the glass ball is prevented from being extruded by water and broken, and the using effect is improved.

Description

Technical Field

[0001] This utility model relates to the field of fire sprinkler technology, specifically a high-stability fire sprinkler head. Background Technology

[0002] A fire sprinkler head is a fire-fighting device installed on a wall or ceiling and connected to a fire sprinkler system. When a fire occurs, water is sprayed out through the sprinkler head's splash plate to extinguish the fire and protect the area below. When the sprinkler head continuously sprays water above the flames, in most cases it will completely extinguish the fire source, or at least control the heat and limit the generation of toxic fumes until the fire brigade arrives.

[0003] Typical fire sprinklers are directly connected to pressurized water pipes (fire sprinkler systems). A glass bulb on the sprinkler head blocks the pipe opening. When the glass bulb is exposed to high temperatures, the liquid inside expands. When the expansion temperature exceeds a set limit, the liquid bursts the glass bulb, allowing the water pipe opening to be opened for fire suppression. However, in low temperatures, the water in the water pipe freezes, and the glass bulb remains fixed at the pipe opening. Due to thermal expansion and contraction, the solid water makes the glass bulb susceptible to bursting under the pressure of the solid water. When the temperature rises, the solid water softens and liquefies, causing the water in the water pipe to spray out. This results in the fire sprinkler head leaking from the water pipe opening even when there is no fire, affecting its effectiveness.

[0004] Therefore, a new technical solution is needed to address the above problems. Utility Model Content

[0005] To address the shortcomings of existing technologies, the purpose of this utility model is to provide a highly stable fire sprinkler head. By applying pressure to a glass bulb through a tension spring, the spring force is made greater than the sealing pressure that seals the channel opening, thereby blocking the channel opening. At the same time, by utilizing the pressure applied by the tension spring, when a large pressure is applied to the glass bulb in the direction of the glass bulb, space can be created for the glass bulb to move, preventing the glass bulb from being squeezed or damaged due to freezing of water inside the channel.

[0006] The above-mentioned technical objective of this utility model is achieved through the following technical solution: The high-stability fire sprinkler head includes an upper block, a glass ball, a dispersion block, and several connecting rods. The upper block has a channel that communicates with a fire pipeline. The connecting rods connect the upper block and the dispersion block. The glass ball blocks the opening of the channel in the upper block. The connecting rods are fixedly connected to the upper block by a tension spring. The connecting rods slide in the direction of the dispersion block toward the upper block. The glass ball is located between the dispersion block and the upper block. The tension spring provides pressure to the connecting rods and the dispersion block to block the opening of the channel in the upper block.

[0007] By adopting the above technical solution, the tension spring increases the elastic force on the support rod and the dispersion block near the upper block. Then, the glass ball placed between the upper block and the dispersion block transmits the upward pressure of the dispersion block to the opening of the channel on the upper block. On the one hand, the pressure applied by the glass ball to the channel opening counteracts the pressure of the water in the channel and seals the channel opening. On the other hand, when the channel applies excessive pressure to the glass ball, it can push the glass ball and the dispersing block connecting rod to move downward and stretch the tension spring, thereby releasing the pressure in the channel and preventing the glass ball from being squeezed and damaged.

[0008] The present invention is further configured such that: the connecting rod includes a support rod and an upper sliding rod that are fixedly connected to each other; the other end of the support rod is connected to the dispersion block; and the upper block has a plurality of upper sliding holes for the upper sliding rod to slide at one end near the dispersion block; and the tension spring connects the upper sliding rod and the inner wall of the upper sliding hole.

[0009] By adopting the above technical solution, the movement trajectory of the connecting rod and the dispersion block is restricted by the sliding connection between the upper sliding rod and the inner wall of the upper sliding hole, and the glass ball can only move in a direction perpendicular to the channel opening surface. This not only increases the positive pressure of the glass ball sealing the channel and enhances the sealing effect, but also allows the glass ball to recover and seal the channel opening again after being pushed open, thus enhancing the usage effect.

[0010] The present invention is further configured such that: the connecting rod also includes a sliding rod fixedly connected to the end of the support rod away from the upper block, the sliding rod passes through the dispersion block and extends to the bottom of the dispersion block, the lower end of the dispersion block is fixedly connected to a lower threaded shaft arranged parallel to the axis of the upper sliding rod, and a nut that abuts against the lower end of the dispersion block is threadedly connected to the lower threaded shaft.

[0011] By adopting the above technical solution, utilizing the sliding connection structure of the sliding rod and the dispersion block, and the structure of the nut being threadedly connected to the lower end of the sliding rod and abutting against the lower end of the dispersion block, the distance between the dispersion block and the upper sliding rod is controlled. When the glass ball is long, the length of the connecting rod between the dispersion block and the upper block is increased to prevent the excessively long glass ball from getting stuck between the upper block and the dispersion block and causing the tension spring to be overstretched, thus preventing the glass ball from being subjected to excessive pressure and breaking. At the same time, when the glass ball is short, the length of the connecting rod between the upper block and the dispersion block is shortened to prevent the tension spring from being too short, which would prevent the glass ball from applying pressure to seal the channel opening, thus increasing the effectiveness of use. In addition, the dispersion block can be removed from the connecting rod first, then the glass ball can be placed into the channel opening, and then the dispersion block can be brought close to the glass ball from the other end of the glass ball to complete the connection between the dispersion block and the connecting rod, which facilitates the installation and replacement of the glass ball and increases the effectiveness of use.

[0012] The present invention is further configured such that: the opening of the channel away from the dispersion block is provided with an internal thread, the end of the channel near the dispersion block is flared, and a sealing gasket that abuts against the glass ball is provided at the opening of the channel.

[0013] By adopting the above technical solution, the internal thread set in the channel is connected to the external thread on the fire pipe, thus completing the connection between the upper block and the fire pipe. At the same time, the fire pipe is connected to the channel. Then, through the structure of the glass ball and the sealing gasket abutting each other, the water cup in the channel and the fire pipe is sealed. When the glass ball is in normal use, it is ensured that the water in the channel does not flow out from the channel, thus ensuring the effectiveness of use.

[0014] The present invention is further configured such that: the inner wall diameter of the channel located between the internal thread and the channel opening is the same as the inner diameter of the fire-fighting pipe, and the inner diameter of the fire-fighting pipe is smaller than the inner diameter of the internal thread and the channel opening.

[0015] By adopting the above technical solution, and by using the setting that the inner diameter of the middle of the channel is smaller than the inner diameter of the pipe opening, the water in the fire pipeline has a larger initial velocity when it flows out of the channel, thereby increasing the impact force of the water on the dispersion block. It also allows the water to be diverted from the dispersion block and have a larger initial velocity in the horizontal direction, increasing the maximum spray area of ​​the fire sprinkler head and further improving the effect.

[0016] The present invention is further configured such that: the dispersion block is a spherical surface with a minor arc cross-section, and a plurality of guide rods extending along the trajectory of the spherical surface are fixedly connected to the edge wall of the dispersion block, and the guide rods form a plurality of protrusions in the direction away from the dispersion block and along the edge trajectory of the dispersion block.

[0017] By adopting the above technical solution, when the water flows along the upper surface of the dispersion block, some water flows out from the gap between two adjacent guide rods, thus reducing the water guiding effect of the dispersion block at this gap. This allows some water to flow out at a relatively large angle relative to the horizontal plane, increasing the water spraying effect in the areas covered by the fire sprinkler head except for the edge positions. At the same time, the protrusions on the guide rods can also intercept some water, further increasing the water spraying effect in the areas covered by the fire sprinkler head except for the edge positions, thereby increasing the fire extinguishing effect.

[0018] In summary, this utility model has the following beneficial effects:

[0019] The tension spring applies pressure to the glass ball through the connecting rod and the dispersion block. The glass ball then applies pressure to the opening of the channel and seals the opening. When liquid or solid water in the channel applies greater pressure to the glass ball, it moves the glass ball downward and releases the pressure in the channel. This prevents the glass ball from being squeezed and broken by water when no fire occurs, such as when water with excessive pressure is introduced into the fire pipe or when water in the fire passage freezes and expands. This improves the effectiveness of the system. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the structure of this utility model;

[0021] Figure 2 This is a cross-sectional view of the present invention;

[0022] Figure 3 This is a schematic diagram of the connecting rod in this utility model;

[0023] Figure 4 This utility model Figure 2 A schematic diagram of the structure at point A in the middle.

[0024] In the picture:

[0025] 11. Upper block; 12. Internal thread; 13. Dispersion block; 14. Support rod; 15. Glass ball; 16. Upper sliding rod; 17. Tension spring; 18. Upper sliding hole; 19. Lower sliding rod; 20. Lower threaded shaft; 21. Nut; 22. Sealing gasket. Detailed Implementation

[0026] The present invention will now be described in detail with reference to the accompanying drawings of the embodiments thereof.

[0027] Example

[0028] This highly stable fire sprinkler head, such as Figures 1 to 4 As shown, the device includes an upper block 11, a glass ball 15, a dispersion block 13, and several connecting rods. The upper block 11 has a channel that connects to a fire-fighting pipeline. The connecting rods connect the upper block 11 and the dispersion block 13. The glass ball 15 blocks the opening of the channel in the upper block 11. The connecting rods are fixedly connected to the upper block 11 by a tension spring 17, and the connecting rods slide towards the upper block 11 from the dispersion block 13. The glass ball 15 is located between the dispersion block 13 and the upper block 11. The tension spring 17 provides pressure to the connecting rods and the dispersion block 13, ensuring the glass ball 15 blocks the opening of the channel in the upper block 11. The connecting rods include support rods 1 that are fixedly connected to each other. 4 and the upper sliding rod 16, the other end of the support rod 14 is connected to the dispersion block 13, and the upper block 11 near the dispersion block 13 has a number of upper sliding holes 18 for the upper sliding rod 16 to slide. The tension spring 17 connects the upper sliding rod 16 and the inner wall of the upper sliding hole 18. The connecting rod also includes a lower sliding rod 19 fixedly connected to the support rod 14 at the end away from the upper block 11. The lower sliding rod 19 passes through the dispersion block 13 and extends to the bottom of the dispersion block 13. The lower end of the dispersion block 13 is fixedly connected to a lower threaded shaft 20 arranged parallel to the axis of the upper sliding rod 16. The lower threaded shaft 20 is threadedly connected to a nut 21 that abuts against the lower end of the dispersion block 13.

[0029] like Figure 2 and Figure 4As shown, an internal thread 12 is provided at the opening of the channel away from the dispersion block 13. The end of the channel near the dispersion block 13 is flared, and a sealing gasket 22 that abuts against the glass ball 15 is provided at the opening of the channel. The inner wall diameter of the channel between the internal thread 12 and the channel opening is the same as the inner diameter of the fire pipe, and the inner diameter of the fire pipe is smaller than the inner diameter of the internal thread 12 and the inner diameter at the channel opening.

[0030] like Figure 1 and Figure 2 As shown, the dispersion block 13 is a spherical surface with a minor arc cross-section, and several guide rods extending along the trajectory of the spherical surface are fixedly connected to the edge wall of the dispersion block 13. The guide rods form several protrusions in the direction away from the dispersion block 13 and along the edge trajectory of the dispersion block 13.

[0031] The upper block 11 is connected to the fire pipe using the internal thread 12, thereby fixing the fire sprinkler head to the fire pipe. The threaded connection between the internal thread 12 and the fire pipe also allows for easy replacement of the fire sprinkler head if damaged, improving its effectiveness. A tension spring 17 connects the upper sliding rod 16 and the upper block 11. The other end of the upper sliding rod 16 is fixedly connected to the support rod 14, and the other end of the support rod 14 is fixedly connected to the lower sliding rod 19. The lower sliding rod 19 passes through the dispersion block 13, and a lower threaded shaft 20 is fixedly connected to its lower end. A nut 21 is threaded onto the lower threaded shaft 20. Rotating the nut 21 controls the distance between the connecting rod and the dispersion block 13 and the upper block 11. This connection, via the upper sliding rod 16, support rod 14, and dispersion block... The retraction force of the 13 tension springs 17 is applied to the glass ball 15, and the length of the glass ball 15 is greater than the distance between the upper block 11 and the dispersion block 13 when the tension springs 17 are contracted. This transfers the force from the tension springs 17 to the glass ball 15, which then transmits the pressure to the channel opening. This compresses and connects the glass ball 15 to the position between the upper block 11 and the dispersion block 13. Simultaneously, the pressure exerted by the glass ball 15 on the upper block 11 seals the channel opening, ensuring that the water flow within the channel is blocked. When the water pressure within the channel is high, the water pushes the glass ball 15 downwards, stretching the tension springs 17 and releasing the pressure within the channel. When the water within the channel freezes and expands, the glass ball... The glass ball 15 is also subjected to pressure and moves downwards to prevent it from being crushed by excessive pressure, thus increasing its effectiveness. Simultaneously, when it needs to withstand higher water pressure within the fire-fighting pipeline, rotating the nut 21 shortens the distance between the upper block 11 and the dispersion block 13, thereby increasing the length of the tension spring 17. This increases the force exerted by the tension spring 17 on the glass ball 15 and the channel opening, enhancing the sealing effect of the glass ball 15 on the channel opening. Furthermore, the structure of the nut 21 threaded to the lower threaded shaft 20 and the sliding connection between the sliding rod 19 and the dispersion block 13 allows the dispersion block 13 to be detached from the connecting rod. The glass ball 15 can be replaced when the dispersion block 13 is damaged, reducing maintenance costs. On the other hand, it also facilitates the replacement of the glass ball 15. First, rotate the nut 21 and unscrew it, then pull out the sliding rod 19, place the glass ball 15 at the channel opening, then put the dispersion block 13 on the connecting rod, and then rotate the nut 21 to complete the installation. This eliminates the need to manually and continuously apply downward force to the dispersion block 13 and stretch the tension spring 17 to insert the glass ball 15, greatly increasing the ease of installation. At the same time, the glass ball 15 can also be replaced. A sealing gasket 22 is also provided at the glass ball 15 and the channel opening. The sealing gasket 22 further increases the sealing effect between the glass ball 15 and the channel opening to prevent water leakage.

[0032] The above description is merely a preferred embodiment of this utility model. The protection scope of this utility model is not limited to the above embodiments. All technical solutions falling within the scope of this utility model's concept are protected. It should be noted that for those skilled in the art, any improvements and modifications made without departing from the principle of this utility model should also be considered within the protection scope of this utility model.

Claims

1. A high-stability fire sprinkler head, comprising an upper block (11), a glass bulb (15), a dispersion block (13), and several connecting rods, wherein the upper block (11) is provided with a channel communicating with a fire pipeline, the connecting rods connect the upper block (11) and the dispersion block (13), and the glass bulb (15) blocks the opening of the channel in the upper block (11), characterized in that: The connecting rod is fixedly connected with the upper block (11) through a tension spring (17), and the connecting rod slides in the direction of the dispersion block (13) towards the upper block (11), the glass ball (15) is located between the dispersion block (13) and the upper block (11), and the tension spring (17) provides pressure to the connecting rod and the dispersion block (13) to block the passage opening of the upper block (11).

2. The high-stability fire-fighting spray head according to claim 1, characterized in that: The connecting rod comprises a support rod (14) and an upper sliding rod (16) fixedly connected with each other, one end of the support rod (14) is connected with the dispersion block (13), and the upper block (11) is provided with a plurality of upper sliding holes (18) for the upper sliding rod (16) to slide at one end close to the dispersion block (13), and the tension spring (17) is connected with the upper sliding rod (16) and the inner wall of the upper sliding hole (18).

3. The high-stability fire sprinkler head of claim 2, wherein: The connecting rod further comprises a lower sliding rod (19) fixedly connected with the support rod (14) away from the upper block (11), the lower sliding rod (19) penetrates through the dispersion block (13) and extends below the dispersion block (13), the lower end of the dispersion block (13) is fixedly connected with a lower threaded shaft (20) arranged in parallel with the axis of the upper sliding rod (16), and the lower threaded shaft (20) is threadedly connected with a nut (21) abutting against the lower end of the dispersion block (13).

4. The high-stability fire sprinkler head of claim 1, wherein: The opening of the passage away from the dispersion block (13) is provided with an internal thread (12), one end of the passage close to the dispersion block (13) is flared, and the opening of the passage is provided with a sealing gasket (22) abutting against the glass ball (15).

5. The high-stability fire sprinkler head of claim 4, wherein: The inner wall diameter of the passage between the internal thread (12) and the passage opening is the same as the inner diameter of the fire-fighting pipeline, and the inner diameter of the fire-fighting pipeline is smaller than the inner diameters of the internal thread (12) and the passage opening.

6. The high-stability fire sprinkler head of claim 1, wherein: The dispersion block (13) is a spherical surface with a poor arc cross section, and a plurality of guide rods extending along the trajectory direction of the spherical surface are fixedly connected at the edge wall position of the dispersion block (13), and the guide rods form a plurality of protrusions in the direction away from the dispersion block (13) and along the edge trajectory of the dispersion block (13).

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