Normally closed fire sprinkler

Abstract

The utility model relates to the technical field of fire-fighting equipment, in particular to a normally closed fire-fighting sprayer which comprises a base and a supporting frame, the base and the supporting frame are connected with each other, a spraying opening is formed in the base, a connecting seat capable of being communicated with the spraying opening is arranged on the base, and the connecting seat is used for being communicated with a fire-fighting pipeline. The base is provided with a blocking block used for blocking the jet orifice, and a temperature sensing glass column used for abutting against the blocking block and sealing the jet orifice is arranged in the supporting frame. An operator can conveniently and accurately machine the position of the spraying opening, and the machining difficulty of the spraying head can be lowered.

Description

Technical Field

[0001] The present application relates to the field of fire-fighting equipment technology, and in particular to a normally closed fire-fighting sprinkler. Background Art

[0002] Fire sprinklers, a crucial component of fire prevention and control systems, are categorized by their activation mechanism into automatic response (activated automatically based on a preset temperature) and controlled response (activated remotely by a fire signal via a control device). These sprinklers are designed to distribute water mist in a specific pattern and flow rate to quickly control and extinguish flames.

[0003] Traditionally, fire sprinklers are categorized as normally open and normally closed. Normally closed sprinklers feature a unique mechanism, with a sophisticated support frame mounted at the nozzle outlet. This support frame houses a temperature-sensitive glass column, which mechanically presses a block against the nozzle, creating a seal. When a preset temperature is reached, the glass column breaks, releasing the block and allowing water to flow. Furthermore, a baffle is installed on the support frame to expand the water spray range through the impact and splashing of the water flow, providing more comprehensive coverage of the fire source and improving firefighting efficiency.

[0004] However, in practice, these normally closed sprinklers have limitations in their water spraying effectiveness. This is primarily due to the large volume of the sprayed water droplets, which makes it difficult to achieve a fine atomization effect. This results in limited fire extinguishing coverage and leaves much to be desired in terms of fire extinguishing efficiency. Therefore, the introduction of atomizing sprinkler technology has become a direction for improvement, as it produces fine, uniform water mist particles, significantly improving fire extinguishing efficiency and coverage.

[0005] However, integrating atomizing nozzle technology into the structure of a normally closed nozzle presents challenges. The nozzle opening of an atomizing nozzle must be designed in a trumpet shape, and its opening angle and machining accuracy are crucial to the atomization effect. However, the support frame design of a normally closed nozzle often obscures the nozzle opening, limiting the possibility of precise turning or adjustment of the nozzle directly, increasing the difficulty of technical implementation. Utility Model Content

[0006] In order to facilitate the operator to accurately process the injection port position and reduce the difficulty of processing the nozzle, the present application provides a normally closed fire sprinkler.

[0007] The normally closed fire sprinkler provided in this application adopts the following technical solution:

[0008] A normally closed fire sprinkler comprises a base and a support frame, wherein the base and the support frame are connected to each other, the base is provided with an injection port, and the base is provided with a connecting seat capable of communicating with the injection port, the connecting seat is used to connect to a fire protection pipe, the base is provided with a block for blocking the injection port, and the support frame is provided with a temperature-sensitive glass column for pressing against the block and sealing the injection port.

[0009] By adopting the above technical solution, the support frame and the base are detachable, which ensures that the support frame will not block the injection port during processing or installation, thereby allowing the injection port to be accurately processed and adjusted, solving the problem caused by support frame obstruction in traditional designs and reducing processing difficulty.

[0010] Optionally, a sealing ring is provided between the blocking block and the base, and the sealing ring surrounds the injection port for sealing.

[0011] By adopting the above technical solution, a sealing ring is added between the block and the base and arranged around the injection port, thereby effectively improving the sealing performance of the nozzle.

[0012] Optionally, a groove is provided on a side of the base facing the support frame, and the sealing ring is embedded in the groove for positioning.

[0013] By adopting the above technical solution, the groove opened on the base is used to embed the sealing ring. This design not only achieves the precise positioning and fixation of the sealing ring, but also simplifies the installation process.

[0014] Optionally, the base is provided with a boss at a position corresponding to the injection port, and the support frame is detachably provided on the boss via a screw member.

[0015] By adopting the above technical solution, the base is raised into a boss corresponding to the injection port, which facilitates the connection between the support frame and the base. The support frame is detachably mounted on the boss by a screw member, which is beneficial to improving the installation stability of the support frame on the base.

[0016] Optionally, the support frame is provided with an abutment plane, and when the abutment plane is installed on the base, the abutment plane is used to abut against the surface of the base to limit the shaking of the support frame.

[0017] By adopting the above technical solution, an abutment plane is set on the support frame so that it is in close contact with the surface of the base, which effectively limits the shaking of the support frame and reduces the shaking of the support frame due to vibration during the transportation or movement of the nozzle, thereby causing the temperature-sensitive glass column to loosen or break.

[0018] Optionally, a limiting groove is provided on the boss corresponding to the position of the support frame, and the support frame is partially inserted into the limiting groove to limit the shaking of the support frame.

[0019] By adopting the above technical solution, a limiting groove is opened on the boss, and the support frame is partially inserted into the limiting groove. This limiting design further enhances the connection stability between the support frame and the base, and reduces the problem of loosening or breakage of the temperature-sensitive glass column.

[0020] Optionally, central axes of the threaded members at both ends of the support frame are not collinear.

[0021] By adopting the above technical solution, the design of the central axes of the screw parts at both ends of the support frame are not collinear, which limits the possibility of the support frame flipping and shaking around the axis of the screw parts, and further improves the connection stability of the support frame on the base.

[0022] In summary, this application includes at least one of the following beneficial technical effects:

[0023] 1. The support frame and the base are set as two separate structures and can be connected to each other. This ensures that the support frame will not block the nozzle during processing or installation, allowing the nozzle to be accurately processed and adjusted. This solves the problem caused by the support frame blocking in traditional designs and helps reduce the difficulty of nozzle processing;

[0024] 2. An abutting plane is set on the support frame so that it is in close contact with the surface of the base, which effectively limits the shaking of the support frame and reduces the shaking of the support frame due to vibration during the transportation or movement of the nozzle, thereby causing the temperature-sensing glass column to loosen or break. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a schematic diagram of the overall structure of Example 1 of the present application.

[0026] Figure 2 This is a cross-sectional view of the groove and the sealing ring used in Example 1 of the present application.

[0027] Figure 3 This is an exploded view of the limiting groove used in Example 2 of the present application.

[0028] Explanation of the accompanying drawings: 1. base; 11. boss; 12. injection port; 13. connecting seat; 2. support frame; 3. temperature-sensing glass column; 4. blocking block; 5. groove; 51. sealing ring; 6. threaded part; 7. limiting groove; 8. abutting plane. DETAILED DESCRIPTION

[0029] The following is combined with Figure 1-3 This application is described in further detail. Example 1

[0030] The embodiment of the present application discloses a normally closed fire sprinkler. Figure 1 and Figure 2The normally closed fire sprinkler includes a base 1, which serves as the main body of the entire sprinkler and is provided with a nozzle 12. The nozzle 12 is the main channel for water to be ejected when the sprinkler is working. In order to be connected to the fire pipe, a connecting seat 13 is also provided on the base 1. The connecting seat 13 is integrally formed with the base 1. The connecting seat 13 is connected to the nozzle 12 through the flow channel in the base 1, and an atomizing core is provided in the flow channel for atomizing the passing water. The connecting seat 13 has an interface that matches the fire pipe to ensure that the water flow can smoothly enter the flow channel inside the base 1, be atomized by the atomizing core, and be ejected from the nozzle 12.

[0031] A removable support frame 2 is mounted on the base 1. This U-shaped frame is positioned with its opening facing the base 1 when installed. A temperature-sensitive glass column 3 is housed within the frame. A block 4 is positioned at the injection port 12 of the base 1. The size and shape of this block 4 match the injection port 12, tightly sealing it. A sealing ring is also positioned between the block 4 and the base 1. This ring surrounds the injection port 12, ensuring an effective seal when the block 4 blocks it.

[0032] The main function of the support frame 2 is to support and fix the temperature-sensitive glass column 3 so that it can be stably positioned above the injection port 12 and to press the block 4 against the injection port 12. When the temperature-sensitive glass column 3 senses that the ambient temperature has reached a preset value, it will automatically break, thereby releasing the block 4, allowing the injection port 12 to open and the water flow to spray out for fire extinguishing.

[0033] The base 1 is provided with a groove 5 on the side facing the block 4, and the injection port 12 is located in the groove 5. After the block 4 and the sealing ring 51 are installed, the sealing ring 51 can be embedded in the groove 5 on the side of the base 1 facing the support frame 2 to achieve the positioning of the sealing ring 51. The sealing ring 51 can fit more tightly between the block 4 and the base 1, providing a reliable sealing effect.

[0034] The position of the base 1 corresponding to the injection port 12 is raised toward the principle connection seat 13 to form a boss 11, and the support frame 2 is connected to the boss 11 via a screw member 6. At this time, the boss 11 is located in the opening of the support frame 2, and the inner wall of the support frame 2 can abut against the boss 11. The two ends of the support frame 2 close to its own opening are connected to the boss 11 via screw members 6, wherein the screw members 6 can be bolts, studs, nuts, etc. The screw members 6 in the embodiment of the present application are bolts. Due to the limited area of ​​the end of the support frame 6, considering the available area at the end of the support frame 2, as well as the diameter and strength of the bolts, in reality, there is a bolt corresponding to each end of the support frame 2.

[0035] An abutment plane 8 is provided on the side of the support frame 2 facing the base 1. When the support frame 2 is installed in place, the abutment plane 8 will closely abut against the surface of the base 1, thereby providing additional supporting force and limiting the shaking of the support frame 2. Example 2

[0036] like Figure 3 The other contents of this embodiment are the same as those of embodiment 1, except that both ends of the support frame 2 are still connected to the boss 11 through screws 6, and the boss 11 is provided with a limiting groove 7 at the end position corresponding to the support frame 2. The support frame 2 can be inserted into the limiting groove 7 along the axial direction of the injection port 12 to limit the flipping of the support frame 2. Example 3

[0037] The rest of the contents of this embodiment are the same as those of embodiment 1, except that there is a threaded member 6 at each end of the support frame 2, and the central axes of the threaded members 6 at both ends of the support frame 2 are not collinear (not shown in the figure), thereby limiting the possibility of the support frame 2 flipping and shaking around the axial direction of the threaded member 6, and further improving the connection stability of the support frame 2 on the base 1.

[0038] The above are all preferred embodiments of the present application, and are not intended to limit the scope of protection of the present application. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the scope of protection of the present application.

Claims

1. A normally closed fire sprinkler, characterized by: The invention comprises a base (1) and a support frame (2), wherein the base (1) and the support frame (2) are connected to each other, the base (1) is provided with an injection port (12), and the base (1) is provided with a connecting seat (13) capable of communicating with the injection port (12), the connecting seat (13) is used to connect with a fire-fighting pipe, the base (1) is provided with a block (4) for blocking the injection port (12), and the support frame (2) is provided with a temperature-sensitive glass column (3) for pressing against the block (4) and sealing the injection port (12).

2. A normally closed fire sprinkler according to claim 1, characterized in that: A sealing ring (51) is provided between the blocking block (4) and the base (1), and the sealing ring (51) surrounds the injection port (12) for sealing.

3. A normally closed fire sprinkler according to claim 2, characterized in that: A groove (5) is provided on one side of the base (1) facing the support frame (2), and the sealing ring (51) is embedded in the groove (5) for positioning.

4. A normally closed fire sprinkler according to claim 1, characterized in that: The base (1) is provided with a boss (11) at a position corresponding to the injection port (12), and the support frame (2) is detachably provided on the boss (11) via a screw member (6).

5. A normally closed fire sprinkler according to claim 4, characterized in that: The support frame (2) is provided with an abutment plane (8), and when the abutment plane (8) is mounted on the base (1), the abutment plane (8) is used to abut against the surface of the base (1) to limit the shaking of the support frame (2).

6. A normally closed fire sprinkler according to claim 4, characterized in that: The boss (11) is provided with a limiting groove (7) corresponding to the position of the support frame (2), and the support frame (2) is partially inserted into the limiting groove (7) to limit the shaking of the support frame (2).

7. A normally closed fire sprinkler according to claim 4, characterized in that: The central axes of the threaded members (6) at both ends of the support frame (2) are not collinear.

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